Flights from Baltimore to Ontario (BWI to ONT)

Discover more affordable routes and cheaper dates from Baltimore to Ontario (BWI to ONT) within a date range.

⭐ Search by country or region to discover more affordable routes, like Netherlands → Italy or Europe → South East Asia.

Results Quantity

Cabin Bags

Checked Bags

Max Budget

US$

Max Duration

Hours

Max Layover

Hours

Departure Time

Connections

Select Airlines

Loading…

US$852

6:15am - 9:51am
Fri Jan 10th 2025

30h 36m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

10:47am - 7:02am
Mon Jan 13th 2025

17h 15m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 419 Depart at 6:15am from Washington, D.C. (BWI) Fly for 6h 24m Arrive at 9:39am in San Francisco (SFO)

Layover in San Francisco for 22h 46m

Sat Jan 11th 2025 United Airlines · UA 573 Depart at 8:25am from San Francisco (SFO) Fly for 1h 26m Arrive at 9:51am in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 1739 Depart at 10:47am from Ontario (ONT) Fly for 1h 33m Arrive at 12:20pm in San Francisco (SFO)

Layover in San Francisco for 10h 27m

Mon Jan 13th 2025 United Airlines · UA 2423 Depart at 10:47pm from San Francisco (SFO) Fly for 5h 15m Arrive at 7:02am in Washington, D.C. (BWI)
US$852

6:15am - 9:51am
Fri Jan 10th 2025

30h 36m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

6:15am - 7:02am
Mon Jan 13th 2025

21h 47m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 419 Depart at 6:15am from Washington, D.C. (BWI) Fly for 6h 24m Arrive at 9:39am in San Francisco (SFO)

Layover in San Francisco for 22h 46m

Sat Jan 11th 2025 United Airlines · UA 573 Depart at 8:25am from San Francisco (SFO) Fly for 1h 26m Arrive at 9:51am in Ontario (ONT)

Stay in Ontario for 1 night

Mon Jan 13th 2025 United Airlines · UA 277 Depart at 6:15am from Ontario (ONT) Fly for 1h 31m Arrive at 7:46am in San Francisco (SFO)

Layover in San Francisco for 15h 1m

Mon Jan 13th 2025 United Airlines · UA 2423 Depart at 10:47pm from San Francisco (SFO) Fly for 5h 15m Arrive at 7:02am in Washington, D.C. (BWI)
US$858

6:15am - 9:51am
Fri Jan 10th 2025

30h 36m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

10:47am - 3:05pm
Mon Jan 13th 2025

25h 18m
Ontario (ONT) → Washington, D.C. (BWI)

2 Stops

Fri Jan 10th 2025 United Airlines · UA 419 Depart at 6:15am from Washington, D.C. (BWI) Fly for 6h 24m Arrive at 9:39am in San Francisco (SFO)

Layover in San Francisco for 22h 46m

Sat Jan 11th 2025 United Airlines · UA 573 Depart at 8:25am from San Francisco (SFO) Fly for 1h 26m Arrive at 9:51am in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 1739 Depart at 10:47am from Ontario (ONT) Fly for 1h 33m Arrive at 12:20pm in San Francisco (SFO)

Layover in San Francisco for 16h 54m

Tue Jan 14th 2025 United Airlines · UA 1362 Depart at 5:14am from San Francisco (SFO) Fly for 2h 42m Arrive at 8:56am in Denver (DEN)

Layover in Denver for 0h 45m

Tue Jan 14th 2025 United Airlines · UA 1362 Depart at 9:41am from Denver (DEN) Fly for 3h 24m Arrive at 3:05pm in Washington, D.C. (BWI)
US$922

8:24am - 9:51am
Fri Jan 10th 2025

28h 27m
Washington, D.C. (BWI) → Ontario (ONT)

2 Stops

10:47am - 7:02am
Mon Jan 13th 2025

17h 15m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 2412 Depart at 8:24am from Washington, D.C. (BWI) Fly for 4h 11m Arrive at 10:35am in Denver (DEN)

Layover in Denver for 19h 25m

Sat Jan 11th 2025 United Airlines · UA 573 Depart at 6:00am from Denver (DEN) Fly for 2h 50m Arrive at 7:50am in San Francisco (SFO)

Layover in San Francisco for 0h 35m

Sat Jan 11th 2025 United Airlines · UA 573 Depart at 8:25am from San Francisco (SFO) Fly for 1h 26m Arrive at 9:51am in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 1739 Depart at 10:47am from Ontario (ONT) Fly for 1h 33m Arrive at 12:20pm in San Francisco (SFO)

Layover in San Francisco for 10h 27m

Mon Jan 13th 2025 United Airlines · UA 2423 Depart at 10:47pm from San Francisco (SFO) Fly for 5h 15m Arrive at 7:02am in Washington, D.C. (BWI)
US$940

3:55pm - 9:57pm
Fri Jan 10th 2025

9h 2m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

10:47am - 7:02am
Mon Jan 13th 2025

17h 15m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 451 Depart at 3:55pm from Washington, D.C. (BWI) Fly for 3h 46m Arrive at 6:41pm in Houston (IAH)

Layover in Houston for 1h 34m

Fri Jan 10th 2025 United Airlines · UA 1563 Depart at 8:15pm from Houston (IAH) Fly for 3h 42m Arrive at 9:57pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 1739 Depart at 10:47am from Ontario (ONT) Fly for 1h 33m Arrive at 12:20pm in San Francisco (SFO)

Layover in San Francisco for 10h 27m

Mon Jan 13th 2025 United Airlines · UA 2423 Depart at 10:47pm from San Francisco (SFO) Fly for 5h 15m Arrive at 7:02am in Washington, D.C. (BWI)
US$940

3:55pm - 9:57pm
Fri Jan 10th 2025

9h 2m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

6:15am - 7:02am
Mon Jan 13th 2025

21h 47m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 451 Depart at 3:55pm from Washington, D.C. (BWI) Fly for 3h 46m Arrive at 6:41pm in Houston (IAH)

Layover in Houston for 1h 34m

Fri Jan 10th 2025 United Airlines · UA 1563 Depart at 8:15pm from Houston (IAH) Fly for 3h 42m Arrive at 9:57pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 277 Depart at 6:15am from Ontario (ONT) Fly for 1h 31m Arrive at 7:46am in San Francisco (SFO)

Layover in San Francisco for 15h 1m

Mon Jan 13th 2025 United Airlines · UA 2423 Depart at 10:47pm from San Francisco (SFO) Fly for 5h 15m Arrive at 7:02am in Washington, D.C. (BWI)
US$940

6:15am - 9:51am
Fri Jan 10th 2025

30h 36m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

5:10am - 3:05pm
Mon Jan 13th 2025

6h 55m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 419 Depart at 6:15am from Washington, D.C. (BWI) Fly for 6h 24m Arrive at 9:39am in San Francisco (SFO)

Layover in San Francisco for 22h 46m

Sat Jan 11th 2025 United Airlines · UA 573 Depart at 8:25am from San Francisco (SFO) Fly for 1h 26m Arrive at 9:51am in Ontario (ONT)

Stay in Ontario for 1 night

Mon Jan 13th 2025 United Airlines · UA 2317 Depart at 5:10am from Ontario (ONT) Fly for 2h 19m Arrive at 8:29am in Denver (DEN)

Layover in Denver for 1h 12m

Mon Jan 13th 2025 United Airlines · UA 1362 Depart at 9:41am from Denver (DEN) Fly for 3h 24m Arrive at 3:05pm in Washington, D.C. (BWI)
US$940

6:15am - 9:51am
Fri Jan 10th 2025

30h 36m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

1:45pm - 11:44pm
Mon Jan 13th 2025

6h 59m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 419 Depart at 6:15am from Washington, D.C. (BWI) Fly for 6h 24m Arrive at 9:39am in San Francisco (SFO)

Layover in San Francisco for 22h 46m

Sat Jan 11th 2025 United Airlines · UA 573 Depart at 8:25am from San Francisco (SFO) Fly for 1h 26m Arrive at 9:51am in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 2278 Depart at 1:45pm from Ontario (ONT) Fly for 2h 19m Arrive at 5:04pm in Denver (DEN)

Layover in Denver for 1h 16m

Mon Jan 13th 2025 United Airlines · UA 709 Depart at 6:20pm from Denver (DEN) Fly for 3h 24m Arrive at 11:44pm in Washington, D.C. (BWI)
US$940

6:15am - 9:51am
Fri Jan 10th 2025

30h 36m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

6:00am - 4:20pm
Mon Jan 13th 2025

7h 20m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 419 Depart at 6:15am from Washington, D.C. (BWI) Fly for 6h 24m Arrive at 9:39am in San Francisco (SFO)

Layover in San Francisco for 22h 46m

Sat Jan 11th 2025 United Airlines · UA 573 Depart at 8:25am from San Francisco (SFO) Fly for 1h 26m Arrive at 9:51am in Ontario (ONT)

Stay in Ontario for 1 night

Mon Jan 13th 2025 United Airlines · UA 2360 Depart at 6:00am from Ontario (ONT) Fly for 3h 3m Arrive at 11:03am in Houston (IAH)

Layover in Houston for 1h 12m

Mon Jan 13th 2025 United Airlines · UA 274 Depart at 12:15pm from Houston (IAH) Fly for 3h 5m Arrive at 4:20pm in Washington, D.C. (BWI)
US$940

6:15am - 9:51am
Fri Jan 10th 2025

30h 36m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

6:38pm - 7:02am
Mon Jan 13th 2025

9h 24m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 419 Depart at 6:15am from Washington, D.C. (BWI) Fly for 6h 24m Arrive at 9:39am in San Francisco (SFO)

Layover in San Francisco for 22h 46m

Sat Jan 11th 2025 United Airlines · UA 573 Depart at 8:25am from San Francisco (SFO) Fly for 1h 26m Arrive at 9:51am in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 5429 Depart at 6:38pm from Ontario (ONT) Fly for 1h 41m Arrive at 8:19pm in San Francisco (SFO)

Layover in San Francisco for 2h 28m

Mon Jan 13th 2025 United Airlines · UA 2423 Depart at 10:47pm from San Francisco (SFO) Fly for 5h 15m Arrive at 7:02am in Washington, D.C. (BWI)
US$945

3:55pm - 9:57pm
Fri Jan 10th 2025

9h 2m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

10:47am - 3:05pm
Mon Jan 13th 2025

25h 18m
Ontario (ONT) → Washington, D.C. (BWI)

2 Stops

Fri Jan 10th 2025 United Airlines · UA 451 Depart at 3:55pm from Washington, D.C. (BWI) Fly for 3h 46m Arrive at 6:41pm in Houston (IAH)

Layover in Houston for 1h 34m

Fri Jan 10th 2025 United Airlines · UA 1563 Depart at 8:15pm from Houston (IAH) Fly for 3h 42m Arrive at 9:57pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 1739 Depart at 10:47am from Ontario (ONT) Fly for 1h 33m Arrive at 12:20pm in San Francisco (SFO)

Layover in San Francisco for 16h 54m

Tue Jan 14th 2025 United Airlines · UA 1362 Depart at 5:14am from San Francisco (SFO) Fly for 2h 42m Arrive at 8:56am in Denver (DEN)

Layover in Denver for 0h 45m

Tue Jan 14th 2025 United Airlines · UA 1362 Depart at 9:41am from Denver (DEN) Fly for 3h 24m Arrive at 3:05pm in Washington, D.C. (BWI)
US$945

3:55pm - 9:57pm
Fri Jan 10th 2025

9h 2m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

6:15am - 3:05pm
Mon Jan 13th 2025

29h 50m
Ontario (ONT) → Washington, D.C. (BWI)

2 Stops

Fri Jan 10th 2025 United Airlines · UA 451 Depart at 3:55pm from Washington, D.C. (BWI) Fly for 3h 46m Arrive at 6:41pm in Houston (IAH)

Layover in Houston for 1h 34m

Fri Jan 10th 2025 United Airlines · UA 1563 Depart at 8:15pm from Houston (IAH) Fly for 3h 42m Arrive at 9:57pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 277 Depart at 6:15am from Ontario (ONT) Fly for 1h 31m Arrive at 7:46am in San Francisco (SFO)

Layover in San Francisco for 21h 28m

Tue Jan 14th 2025 United Airlines · UA 1362 Depart at 5:14am from San Francisco (SFO) Fly for 2h 42m Arrive at 8:56am in Denver (DEN)

Layover in Denver for 0h 45m

Tue Jan 14th 2025 United Airlines · UA 1362 Depart at 9:41am from Denver (DEN) Fly for 3h 24m Arrive at 3:05pm in Washington, D.C. (BWI)
US$950

6:59pm - 6:13pm
Fri Jan 10th 2025

26h 14m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

6:00am - 5:59pm
Mon Jan 13th 2025

8h 59m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 Alaska Airlines · AS 379 Depart at 6:59pm from Washington, D.C. (BWI) Fly for 6h 1m Arrive at 10:00pm in Seattle (SEA)

Layover in Seattle for 17h 40m

Sat Jan 11th 2025 Alaska Airlines · AS 1086 Depart at 3:40pm from Seattle (SEA) Fly for 2h 33m Arrive at 6:13pm in Ontario (ONT)

Stay in Ontario for 1 night

Mon Jan 13th 2025 Alaska Airlines · AS 1091 Depart at 6:00am from Ontario (ONT) Fly for 2h 54m Arrive at 8:54am in Seattle (SEA)

Layover in Seattle for 0h 58m

Mon Jan 13th 2025 Alaska Airlines · AS 379 Depart at 9:52am from Seattle (SEA) Fly for 5h 7m Arrive at 5:59pm in Washington, D.C. (BWI)
US$983

6:59pm - 10:49am
Fri Jan 10th 2025

18h 50m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

6:00am - 5:59pm
Mon Jan 13th 2025

8h 59m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 Alaska Airlines · AS 379 Depart at 6:59pm from Washington, D.C. (BWI) Fly for 6h 1m Arrive at 10:00pm in Seattle (SEA)

Layover in Seattle for 10h 0m

Sat Jan 11th 2025 Alaska Airlines · AS 1254 Depart at 8:00am from Seattle (SEA) Fly for 2h 49m Arrive at 10:49am in Ontario (ONT)

Stay in Ontario for 1 night

Mon Jan 13th 2025 Alaska Airlines · AS 1091 Depart at 6:00am from Ontario (ONT) Fly for 2h 54m Arrive at 8:54am in Seattle (SEA)

Layover in Seattle for 0h 58m

Mon Jan 13th 2025 Alaska Airlines · AS 379 Depart at 9:52am from Seattle (SEA) Fly for 5h 7m Arrive at 5:59pm in Washington, D.C. (BWI)
US$988

6:59pm - 5:04pm
Fri Jan 10th 2025

25h 5m
Washington, D.C. (BWI) → Ontario (ONT)

2 Stops

6:00am - 5:59pm
Mon Jan 13th 2025

8h 59m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 Alaska Airlines · AS 379 Depart at 6:59pm from Washington, D.C. (BWI) Fly for 6h 1m Arrive at 10:00pm in Seattle (SEA)

Layover in Seattle for 12h 0m

Sat Jan 11th 2025 Alaska Airlines · AS 2213 Depart at 10:00am from Seattle (SEA) Fly for 1h 0m Arrive at 11:00am in Portland (PDX)

Layover in Portland for 3h 45m

Sat Jan 11th 2025 Alaska Airlines · AS 3498 Depart at 2:45pm from Portland (PDX) Fly for 2h 19m Arrive at 5:04pm in Ontario (ONT)

Stay in Ontario for 1 night

Mon Jan 13th 2025 Alaska Airlines · AS 1091 Depart at 6:00am from Ontario (ONT) Fly for 2h 54m Arrive at 8:54am in Seattle (SEA)

Layover in Seattle for 0h 58m

Mon Jan 13th 2025 Alaska Airlines · AS 379 Depart at 9:52am from Seattle (SEA) Fly for 5h 7m Arrive at 5:59pm in Washington, D.C. (BWI)
US$988

6:59pm - 5:04pm
Fri Jan 10th 2025

25h 5m
Washington, D.C. (BWI) → Ontario (ONT)

2 Stops

6:00am - 5:59pm
Mon Jan 13th 2025

8h 59m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 Alaska Airlines · AS 379 Depart at 6:59pm from Washington, D.C. (BWI) Fly for 6h 1m Arrive at 10:00pm in Seattle (SEA)

Layover in Seattle for 13h 36m

Sat Jan 11th 2025 Alaska Airlines · AS 1039 Depart at 11:36am from Seattle (SEA) Fly for 0h 59m Arrive at 12:35pm in Portland (PDX)

Layover in Portland for 2h 10m

Sat Jan 11th 2025 Alaska Airlines · AS 3498 Depart at 2:45pm from Portland (PDX) Fly for 2h 19m Arrive at 5:04pm in Ontario (ONT)

Stay in Ontario for 1 night

Mon Jan 13th 2025 Alaska Airlines · AS 1091 Depart at 6:00am from Ontario (ONT) Fly for 2h 54m Arrive at 8:54am in Seattle (SEA)

Layover in Seattle for 0h 58m

Mon Jan 13th 2025 Alaska Airlines · AS 379 Depart at 9:52am from Seattle (SEA) Fly for 5h 7m Arrive at 5:59pm in Washington, D.C. (BWI)
US$1009

8:24am - 9:51am
Fri Jan 10th 2025

28h 27m
Washington, D.C. (BWI) → Ontario (ONT)

2 Stops

5:10am - 3:05pm
Mon Jan 13th 2025

6h 55m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 2412 Depart at 8:24am from Washington, D.C. (BWI) Fly for 4h 11m Arrive at 10:35am in Denver (DEN)

Layover in Denver for 19h 25m

Sat Jan 11th 2025 United Airlines · UA 573 Depart at 6:00am from Denver (DEN) Fly for 2h 50m Arrive at 7:50am in San Francisco (SFO)

Layover in San Francisco for 0h 35m

Sat Jan 11th 2025 United Airlines · UA 573 Depart at 8:25am from San Francisco (SFO) Fly for 1h 26m Arrive at 9:51am in Ontario (ONT)

Stay in Ontario for 1 night

Mon Jan 13th 2025 United Airlines · UA 2317 Depart at 5:10am from Ontario (ONT) Fly for 2h 19m Arrive at 8:29am in Denver (DEN)

Layover in Denver for 1h 12m

Mon Jan 13th 2025 United Airlines · UA 1362 Depart at 9:41am from Denver (DEN) Fly for 3h 24m Arrive at 3:05pm in Washington, D.C. (BWI)
US$1009

8:24am - 9:51am
Fri Jan 10th 2025

28h 27m
Washington, D.C. (BWI) → Ontario (ONT)

2 Stops

1:45pm - 11:44pm
Mon Jan 13th 2025

6h 59m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 2412 Depart at 8:24am from Washington, D.C. (BWI) Fly for 4h 11m Arrive at 10:35am in Denver (DEN)

Layover in Denver for 19h 25m

Sat Jan 11th 2025 United Airlines · UA 573 Depart at 6:00am from Denver (DEN) Fly for 2h 50m Arrive at 7:50am in San Francisco (SFO)

Layover in San Francisco for 0h 35m

Sat Jan 11th 2025 United Airlines · UA 573 Depart at 8:25am from San Francisco (SFO) Fly for 1h 26m Arrive at 9:51am in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 2278 Depart at 1:45pm from Ontario (ONT) Fly for 2h 19m Arrive at 5:04pm in Denver (DEN)

Layover in Denver for 1h 16m

Mon Jan 13th 2025 United Airlines · UA 709 Depart at 6:20pm from Denver (DEN) Fly for 3h 24m Arrive at 11:44pm in Washington, D.C. (BWI)
US$1025

3:55pm - 9:57pm
Fri Jan 10th 2025

9h 2m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

5:10am - 11:44pm
Mon Jan 13th 2025

15h 34m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 451 Depart at 3:55pm from Washington, D.C. (BWI) Fly for 3h 46m Arrive at 6:41pm in Houston (IAH)

Layover in Houston for 1h 34m

Fri Jan 10th 2025 United Airlines · UA 1563 Depart at 8:15pm from Houston (IAH) Fly for 3h 42m Arrive at 9:57pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 2317 Depart at 5:10am from Ontario (ONT) Fly for 2h 19m Arrive at 8:29am in Denver (DEN)

Layover in Denver for 9h 51m

Mon Jan 13th 2025 United Airlines · UA 709 Depart at 6:20pm from Denver (DEN) Fly for 3h 24m Arrive at 11:44pm in Washington, D.C. (BWI)
US$1025

3:55pm - 9:57pm
Fri Jan 10th 2025

9h 2m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

1:45pm - 3:05pm
Mon Jan 13th 2025

22h 20m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 451 Depart at 3:55pm from Washington, D.C. (BWI) Fly for 3h 46m Arrive at 6:41pm in Houston (IAH)

Layover in Houston for 1h 34m

Fri Jan 10th 2025 United Airlines · UA 1563 Depart at 8:15pm from Houston (IAH) Fly for 3h 42m Arrive at 9:57pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 2278 Depart at 1:45pm from Ontario (ONT) Fly for 2h 19m Arrive at 5:04pm in Denver (DEN)

Layover in Denver for 16h 37m

Tue Jan 14th 2025 United Airlines · UA 1362 Depart at 9:41am from Denver (DEN) Fly for 3h 24m Arrive at 3:05pm in Washington, D.C. (BWI)
US$1027

3:55pm - 9:57pm
Fri Jan 10th 2025

9h 2m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

5:10am - 3:05pm
Mon Jan 13th 2025

6h 55m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 451 Depart at 3:55pm from Washington, D.C. (BWI) Fly for 3h 46m Arrive at 6:41pm in Houston (IAH)

Layover in Houston for 1h 34m

Fri Jan 10th 2025 United Airlines · UA 1563 Depart at 8:15pm from Houston (IAH) Fly for 3h 42m Arrive at 9:57pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 2317 Depart at 5:10am from Ontario (ONT) Fly for 2h 19m Arrive at 8:29am in Denver (DEN)

Layover in Denver for 1h 12m

Mon Jan 13th 2025 United Airlines · UA 1362 Depart at 9:41am from Denver (DEN) Fly for 3h 24m Arrive at 3:05pm in Washington, D.C. (BWI)
US$1027

3:55pm - 9:57pm
Fri Jan 10th 2025

9h 2m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

1:45pm - 11:44pm
Mon Jan 13th 2025

6h 59m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 451 Depart at 3:55pm from Washington, D.C. (BWI) Fly for 3h 46m Arrive at 6:41pm in Houston (IAH)

Layover in Houston for 1h 34m

Fri Jan 10th 2025 United Airlines · UA 1563 Depart at 8:15pm from Houston (IAH) Fly for 3h 42m Arrive at 9:57pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 2278 Depart at 1:45pm from Ontario (ONT) Fly for 2h 19m Arrive at 5:04pm in Denver (DEN)

Layover in Denver for 1h 16m

Mon Jan 13th 2025 United Airlines · UA 709 Depart at 6:20pm from Denver (DEN) Fly for 3h 24m Arrive at 11:44pm in Washington, D.C. (BWI)
US$1027

3:55pm - 9:57pm
Fri Jan 10th 2025

9h 2m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

6:00am - 5:59pm
Mon Jan 13th 2025

8h 59m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 451 Depart at 3:55pm from Washington, D.C. (BWI) Fly for 3h 46m Arrive at 6:41pm in Houston (IAH)

Layover in Houston for 1h 34m

Fri Jan 10th 2025 United Airlines · UA 1563 Depart at 8:15pm from Houston (IAH) Fly for 3h 42m Arrive at 9:57pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 Alaska Airlines · AS 1091 Depart at 6:00am from Ontario (ONT) Fly for 2h 54m Arrive at 8:54am in Seattle (SEA)

Layover in Seattle for 0h 58m

Mon Jan 13th 2025 Alaska Airlines · AS 379 Depart at 9:52am from Seattle (SEA) Fly for 5h 7m Arrive at 5:59pm in Washington, D.C. (BWI)
US$1027

3:55pm - 9:57pm
Fri Jan 10th 2025

9h 2m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

6:38pm - 7:02am
Mon Jan 13th 2025

9h 24m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 451 Depart at 3:55pm from Washington, D.C. (BWI) Fly for 3h 46m Arrive at 6:41pm in Houston (IAH)

Layover in Houston for 1h 34m

Fri Jan 10th 2025 United Airlines · UA 1563 Depart at 8:15pm from Houston (IAH) Fly for 3h 42m Arrive at 9:57pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 5429 Depart at 6:38pm from Ontario (ONT) Fly for 1h 41m Arrive at 8:19pm in San Francisco (SFO)

Layover in San Francisco for 2h 28m

Mon Jan 13th 2025 United Airlines · UA 2423 Depart at 10:47pm from San Francisco (SFO) Fly for 5h 15m Arrive at 7:02am in Washington, D.C. (BWI)
US$1028

8:24am - 12:43pm
Sat Jan 11th 2025

7h 19m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

6:00am - 5:59pm
Mon Jan 13th 2025

8h 59m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Sat Jan 11th 2025 United Airlines · UA 2412 Depart at 8:24am from Washington, D.C. (BWI) Fly for 4h 11m Arrive at 10:35am in Denver (DEN)

Layover in Denver for 0h 42m

Sat Jan 11th 2025 United Airlines · UA 430 Depart at 11:17am from Denver (DEN) Fly for 2h 26m Arrive at 12:43pm in Ontario (ONT)

Stay in Ontario for 1 night

Mon Jan 13th 2025 Alaska Airlines · AS 1091 Depart at 6:00am from Ontario (ONT) Fly for 2h 54m Arrive at 8:54am in Seattle (SEA)

Layover in Seattle for 0h 58m

Mon Jan 13th 2025 Alaska Airlines · AS 379 Depart at 9:52am from Seattle (SEA) Fly for 5h 7m Arrive at 5:59pm in Washington, D.C. (BWI)
US$1028

4:10pm - 8:51pm
Sat Jan 11th 2025

7h 41m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

6:00am - 5:59pm
Mon Jan 13th 2025

8h 59m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Sat Jan 11th 2025 United Airlines · UA 2012 Depart at 4:10pm from Washington, D.C. (BWI) Fly for 4h 10m Arrive at 6:20pm in Denver (DEN)

Layover in Denver for 1h 5m

Sat Jan 11th 2025 United Airlines · UA 1574 Depart at 7:25pm from Denver (DEN) Fly for 2h 26m Arrive at 8:51pm in Ontario (ONT)

Stay in Ontario for 1 night

Mon Jan 13th 2025 Alaska Airlines · AS 1091 Depart at 6:00am from Ontario (ONT) Fly for 2h 54m Arrive at 8:54am in Seattle (SEA)

Layover in Seattle for 0h 58m

Mon Jan 13th 2025 Alaska Airlines · AS 379 Depart at 9:52am from Seattle (SEA) Fly for 5h 7m Arrive at 5:59pm in Washington, D.C. (BWI)
US$1036

6:15am - 5:57pm
Fri Jan 10th 2025

14h 42m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

10:47am - 7:02am
Mon Jan 13th 2025

17h 15m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 419 Depart at 6:15am from Washington, D.C. (BWI) Fly for 6h 24m Arrive at 9:39am in San Francisco (SFO)

Layover in San Francisco for 6h 45m

Fri Jan 10th 2025 United Airlines · UA 4783 Depart at 4:24pm from San Francisco (SFO) Fly for 1h 33m Arrive at 5:57pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 1739 Depart at 10:47am from Ontario (ONT) Fly for 1h 33m Arrive at 12:20pm in San Francisco (SFO)

Layover in San Francisco for 10h 27m

Mon Jan 13th 2025 United Airlines · UA 2423 Depart at 10:47pm from San Francisco (SFO) Fly for 5h 15m Arrive at 7:02am in Washington, D.C. (BWI)
US$1036

6:15am - 8:29pm
Fri Jan 10th 2025

17h 14m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

10:47am - 7:02am
Mon Jan 13th 2025

17h 15m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 419 Depart at 6:15am from Washington, D.C. (BWI) Fly for 6h 24m Arrive at 9:39am in San Francisco (SFO)

Layover in San Francisco for 9h 21m

Fri Jan 10th 2025 United Airlines · UA 304 Depart at 7:00pm from San Francisco (SFO) Fly for 1h 29m Arrive at 8:29pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 1739 Depart at 10:47am from Ontario (ONT) Fly for 1h 33m Arrive at 12:20pm in San Francisco (SFO)

Layover in San Francisco for 10h 27m

Mon Jan 13th 2025 United Airlines · UA 2423 Depart at 10:47pm from San Francisco (SFO) Fly for 5h 15m Arrive at 7:02am in Washington, D.C. (BWI)
US$1046

6:59pm - 10:34am
Fri Jan 10th 2025

18h 35m
Washington, D.C. (BWI) → Ontario (ONT)

2 Stops

6:00am - 5:59pm
Mon Jan 13th 2025

8h 59m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 Alaska Airlines · AS 379 Depart at 6:59pm from Washington, D.C. (BWI) Fly for 6h 1m Arrive at 10:00pm in Seattle (SEA)

Layover in Seattle for 0h 51m

Fri Jan 10th 2025 Alaska Airlines · AS 957 Depart at 10:51pm from Seattle (SEA) Fly for 0h 52m Arrive at 11:43pm in Portland (PDX)

Layover in Portland for 8h 30m

Sat Jan 11th 2025 Alaska Airlines · AS 3312 Depart at 8:13am from Portland (PDX) Fly for 2h 21m Arrive at 10:34am in Ontario (ONT)

Stay in Ontario for 1 night

Mon Jan 13th 2025 Alaska Airlines · AS 1091 Depart at 6:00am from Ontario (ONT) Fly for 2h 54m Arrive at 8:54am in Seattle (SEA)

Layover in Seattle for 0h 58m

Mon Jan 13th 2025 Alaska Airlines · AS 379 Depart at 9:52am from Seattle (SEA) Fly for 5h 7m Arrive at 5:59pm in Washington, D.C. (BWI)
US$1054

3:55pm - 9:57pm
Fri Jan 10th 2025

9h 2m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

6:38pm - 3:05pm
Mon Jan 13th 2025

17h 27m
Ontario (ONT) → Washington, D.C. (BWI)

2 Stops

Fri Jan 10th 2025 United Airlines · UA 451 Depart at 3:55pm from Washington, D.C. (BWI) Fly for 3h 46m Arrive at 6:41pm in Houston (IAH)

Layover in Houston for 1h 34m

Fri Jan 10th 2025 United Airlines · UA 1563 Depart at 8:15pm from Houston (IAH) Fly for 3h 42m Arrive at 9:57pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 5429 Depart at 6:38pm from Ontario (ONT) Fly for 1h 41m Arrive at 8:19pm in San Francisco (SFO)

Layover in San Francisco for 8h 55m

Tue Jan 14th 2025 United Airlines · UA 1362 Depart at 5:14am from San Francisco (SFO) Fly for 2h 42m Arrive at 8:56am in Denver (DEN)

Layover in Denver for 0h 45m

Tue Jan 14th 2025 United Airlines · UA 1362 Depart at 9:41am from Denver (DEN) Fly for 3h 24m Arrive at 3:05pm in Washington, D.C. (BWI)
US$1103

3:55pm - 9:57pm
Fri Jan 10th 2025

9h 2m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

6:00am - 4:20pm
Mon Jan 13th 2025

7h 20m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 451 Depart at 3:55pm from Washington, D.C. (BWI) Fly for 3h 46m Arrive at 6:41pm in Houston (IAH)

Layover in Houston for 1h 34m

Fri Jan 10th 2025 United Airlines · UA 1563 Depart at 8:15pm from Houston (IAH) Fly for 3h 42m Arrive at 9:57pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 2360 Depart at 6:00am from Ontario (ONT) Fly for 3h 3m Arrive at 11:03am in Houston (IAH)

Layover in Houston for 1h 12m

Mon Jan 13th 2025 United Airlines · UA 274 Depart at 12:15pm from Houston (IAH) Fly for 3h 5m Arrive at 4:20pm in Washington, D.C. (BWI)
US$1124

6:15am - 8:29pm
Fri Jan 10th 2025

17h 14m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

5:10am - 3:05pm
Mon Jan 13th 2025

6h 55m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 419 Depart at 6:15am from Washington, D.C. (BWI) Fly for 6h 24m Arrive at 9:39am in San Francisco (SFO)

Layover in San Francisco for 9h 21m

Fri Jan 10th 2025 United Airlines · UA 304 Depart at 7:00pm from San Francisco (SFO) Fly for 1h 29m Arrive at 8:29pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 2317 Depart at 5:10am from Ontario (ONT) Fly for 2h 19m Arrive at 8:29am in Denver (DEN)

Layover in Denver for 1h 12m

Mon Jan 13th 2025 United Airlines · UA 1362 Depart at 9:41am from Denver (DEN) Fly for 3h 24m Arrive at 3:05pm in Washington, D.C. (BWI)
US$1124

6:15am - 8:29pm
Fri Jan 10th 2025

17h 14m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

1:45pm - 11:44pm
Mon Jan 13th 2025

6h 59m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 419 Depart at 6:15am from Washington, D.C. (BWI) Fly for 6h 24m Arrive at 9:39am in San Francisco (SFO)

Layover in San Francisco for 9h 21m

Fri Jan 10th 2025 United Airlines · UA 304 Depart at 7:00pm from San Francisco (SFO) Fly for 1h 29m Arrive at 8:29pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 2278 Depart at 1:45pm from Ontario (ONT) Fly for 2h 19m Arrive at 5:04pm in Denver (DEN)

Layover in Denver for 1h 16m

Mon Jan 13th 2025 United Airlines · UA 709 Depart at 6:20pm from Denver (DEN) Fly for 3h 24m Arrive at 11:44pm in Washington, D.C. (BWI)
US$1139

6:15am - 5:57pm
Fri Jan 10th 2025

14h 42m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

5:10am - 3:05pm
Mon Jan 13th 2025

6h 55m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 419 Depart at 6:15am from Washington, D.C. (BWI) Fly for 6h 24m Arrive at 9:39am in San Francisco (SFO)

Layover in San Francisco for 6h 45m

Fri Jan 10th 2025 United Airlines · UA 4783 Depart at 4:24pm from San Francisco (SFO) Fly for 1h 33m Arrive at 5:57pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 2317 Depart at 5:10am from Ontario (ONT) Fly for 2h 19m Arrive at 8:29am in Denver (DEN)

Layover in Denver for 1h 12m

Mon Jan 13th 2025 United Airlines · UA 1362 Depart at 9:41am from Denver (DEN) Fly for 3h 24m Arrive at 3:05pm in Washington, D.C. (BWI)
US$1139

6:15am - 5:57pm
Fri Jan 10th 2025

14h 42m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

1:45pm - 11:44pm
Mon Jan 13th 2025

6h 59m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 419 Depart at 6:15am from Washington, D.C. (BWI) Fly for 6h 24m Arrive at 9:39am in San Francisco (SFO)

Layover in San Francisco for 6h 45m

Fri Jan 10th 2025 United Airlines · UA 4783 Depart at 4:24pm from San Francisco (SFO) Fly for 1h 33m Arrive at 5:57pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 2278 Depart at 1:45pm from Ontario (ONT) Fly for 2h 19m Arrive at 5:04pm in Denver (DEN)

Layover in Denver for 1h 16m

Mon Jan 13th 2025 United Airlines · UA 709 Depart at 6:20pm from Denver (DEN) Fly for 3h 24m Arrive at 11:44pm in Washington, D.C. (BWI)
US$1401

8:24am - 12:41pm
Fri Jan 10th 2025

7h 17m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

5:10am - 3:05pm
Mon Jan 13th 2025

6h 55m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 2412 Depart at 8:24am from Washington, D.C. (BWI) Fly for 4h 11m Arrive at 10:35am in Denver (DEN)

Layover in Denver for 0h 40m

Fri Jan 10th 2025 United Airlines · UA 430 Depart at 11:15am from Denver (DEN) Fly for 2h 26m Arrive at 12:41pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 2317 Depart at 5:10am from Ontario (ONT) Fly for 2h 19m Arrive at 8:29am in Denver (DEN)

Layover in Denver for 1h 12m

Mon Jan 13th 2025 United Airlines · UA 1362 Depart at 9:41am from Denver (DEN) Fly for 3h 24m Arrive at 3:05pm in Washington, D.C. (BWI)
US$1401

8:24am - 12:41pm
Fri Jan 10th 2025

7h 17m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

1:45pm - 11:44pm
Mon Jan 13th 2025

6h 59m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 2412 Depart at 8:24am from Washington, D.C. (BWI) Fly for 4h 11m Arrive at 10:35am in Denver (DEN)

Layover in Denver for 0h 40m

Fri Jan 10th 2025 United Airlines · UA 430 Depart at 11:15am from Denver (DEN) Fly for 2h 26m Arrive at 12:41pm in Ontario (ONT)

Stay in Ontario for 3 nights

Mon Jan 13th 2025 United Airlines · UA 2278 Depart at 1:45pm from Ontario (ONT) Fly for 2h 19m Arrive at 5:04pm in Denver (DEN)

Layover in Denver for 1h 16m

Mon Jan 13th 2025 United Airlines · UA 709 Depart at 6:20pm from Denver (DEN) Fly for 3h 24m Arrive at 11:44pm in Washington, D.C. (BWI)
US$1448

4:10pm - 8:51pm
Fri Jan 10th 2025

7h 41m
Washington, D.C. (BWI) → Ontario (ONT)

1 Stop

5:10am - 3:05pm
Mon Jan 13th 2025

6h 55m
Ontario (ONT) → Washington, D.C. (BWI)

1 Stop

Fri Jan 10th 2025 United Airlines · UA 2012 Depart at 4:10pm from Washington, D.C. (BWI) Fly for 4h 10m Arrive at 6:20pm in Denver (DEN)

Layover in Denver for 1h 5m

Fri Jan 10th 2025 United Airlines · UA 1574 Depart at 7:25pm from Denver (DEN) Fly for 2h 26m Arrive at 8:51pm in Ontario (ONT)

Stay in Ontario for 2 nights

Mon Jan 13th 2025 United Airlines · UA 2317 Depart at 5:10am from Ontario (ONT) Fly for 2h 19m Arrive at 8:29am in Denver (DEN)

Layover in Denver for 1h 12m

Mon Jan 13th 2025 United Airlines · UA 1362 Depart at 9:41am from Denver (DEN) Fly for 3h 24m Arrive at 3:05pm in Washington, D.C. (BWI)

Sarah Belizaire

@sarahbb1

Have flexible travel plans or looking for alternative routes given the chaos? Check out all the connection possibilities via a super helpful site created by @ismaelyws flightlist.io thanks to @andy_travels for the recommendation #travel #flights

John Ford

@eyupitsjohn

There seem to be lots of sites launching at the moment that promise to find you cheap flights but not many have the professional finish of Flightlist by @ismaelyws #travel #flights

Roaming Sonaa

@roamingsonaa

For people wanting to maximize their trips, Flightlist is my newest travel hack for uncovering the coolest routes at irresistible prices. No stress, no annoying ads — just seamless flight booking with amazing functionality.

Andy Travels

@andy_travels

@ismaelyws Just tried out Flightlist for the first time. Really nice idea, well made, and just what I need at the moment 👍

Travel With Bender

@travelwitbender

Did you spot my recent article about how to score cheap one way flights? ✈️ FlightList is my new secret tool for discovering cheap routes, within a departure date range. Plus you can also search by country/region for departures & destinations. Powerful! 💪

Wesley Mergard

@travel.with.wes

One useful tool I've found for evaluating different departure and return dates is called FlightList.io. You can quickly scan different travel date ranges, carriers and one way flight options to easily determine the cheapest flight combinations for your trip.

Flights from Baltimore to Ontario (BWI to ONT)

Sarah Belizaire

John Ford

Roaming Sonaa

Andy Travels

Travel With Bender

Wesley Mergard

Explore Flight Options

FlightList Blog

Flightlist Interviews 7 Travel Experts On Why They Book One Way Flights

Why I Built FlightList & Solved My Own Problem

About FlightList