Cheap Flights from Portland to Denver (PDX to DEN)

Sat Oct 18th 2025 Frontier Airlines · F9 1790 Depart at 6:05am from Portland (PDX) Fly for 2h 41m Arrive at 9:46am in Denver (DEN)

Thu Oct 16th 2025 Frontier Airlines · F9 1790 Depart at 6:05am from Portland (PDX) Fly for 2h 41m Arrive at 9:46am in Denver (DEN)

Mon Oct 20th 2025 Frontier Airlines · F9 2554 Depart at 8:57am from Portland (PDX) Fly for 2h 38m Arrive at 12:35pm in Denver (DEN)

Sun Oct 19th 2025 Frontier Airlines · F9 1790 Depart at 6:05am from Portland (PDX) Fly for 2h 41m Arrive at 9:46am in Denver (DEN)

Mon Oct 20th 2025 Frontier Airlines · F9 1790 Depart at 6:05am from Portland (PDX) Fly for 2h 41m Arrive at 9:46am in Denver (DEN)

Sat Oct 18th 2025 Hawaiian Airlines · HA 6338 Depart at 2:32pm from Portland (PDX) Fly for 2h 30m Arrive at 6:02pm in Denver (DEN)

Sat Oct 18th 2025 Alaska Airlines · AS 1235 Depart at 2:32pm from Portland (PDX) Fly for 2h 30m Arrive at 6:02pm in Denver (DEN)

Mon Oct 20th 2025 Frontier Airlines · F9 3192 Depart at 11:08am from Portland (PDX) Fly for 1h 55m Arrive at 2:03pm in Salt Lake City (SLC)

Mon Oct 20th 2025 Frontier Airlines · F9 3982 Depart at 4:03pm from Salt Lake City (SLC) Fly for 1h 38m Arrive at 5:41pm in Denver (DEN)

Fri Oct 17th 2025 Frontier Airlines · F9 3160 Depart at 8:53pm from Portland (PDX) Fly for 2h 38m Arrive at 11:31pm in Phoenix (PHX)

Sat Oct 18th 2025 Frontier Airlines · F9 1376 Depart at 6:33am from Phoenix (PHX) Fly for 1h 59m Arrive at 9:32am in Denver (DEN)

Sun Oct 19th 2025 Hawaiian Airlines · HA 6338 Depart at 2:32pm from Portland (PDX) Fly for 2h 30m Arrive at 6:02pm in Denver (DEN)

Mon Oct 20th 2025 Hawaiian Airlines · HA 6338 Depart at 2:32pm from Portland (PDX) Fly for 2h 30m Arrive at 6:02pm in Denver (DEN)

Fri Oct 17th 2025 Hawaiian Airlines · HA 6338 Depart at 2:32pm from Portland (PDX) Fly for 2h 30m Arrive at 6:02pm in Denver (DEN)

Sun Oct 19th 2025 Hawaiian Airlines · HA 6337 Depart at 7:25am from Portland (PDX) Fly for 2h 33m Arrive at 10:58am in Denver (DEN)

Mon Oct 20th 2025 Hawaiian Airlines · HA 6337 Depart at 7:25am from Portland (PDX) Fly for 2h 33m Arrive at 10:58am in Denver (DEN)

Mon Oct 20th 2025 Frontier Airlines · F9 3160 Depart at 8:53pm from Portland (PDX) Fly for 2h 38m Arrive at 11:31pm in Phoenix (PHX)

Tue Oct 21st 2025 Frontier Airlines · F9 1376 Depart at 6:33am from Phoenix (PHX) Fly for 1h 59m Arrive at 9:32am in Denver (DEN)

Mon Oct 20th 2025 Alaska Airlines · AS 1235 Depart at 2:32pm from Portland (PDX) Fly for 2h 30m Arrive at 6:02pm in Denver (DEN)

Fri Oct 17th 2025 Alaska Airlines · AS 1235 Depart at 2:32pm from Portland (PDX) Fly for 2h 30m Arrive at 6:02pm in Denver (DEN)

Sun Oct 19th 2025 Alaska Airlines · AS 1235 Depart at 2:32pm from Portland (PDX) Fly for 2h 30m Arrive at 6:02pm in Denver (DEN)

Mon Oct 20th 2025 Alaska Airlines · AS 1136 Depart at 7:25am from Portland (PDX) Fly for 2h 33m Arrive at 10:58am in Denver (DEN)

Sun Oct 19th 2025 Alaska Airlines · AS 1136 Depart at 7:25am from Portland (PDX) Fly for 2h 33m Arrive at 10:58am in Denver (DEN)

Sat Oct 18th 2025 Hawaiian Airlines · HA 6394 Depart at 6:05am from Portland (PDX) Fly for 1h 1m Arrive at 7:06am in Seattle (SEA)

Sat Oct 18th 2025 Hawaiian Airlines · HA 6555 Depart at 8:02am from Seattle (SEA) Fly for 2h 53m Arrive at 11:55am in Denver (DEN)

Mon Oct 20th 2025 Hawaiian Airlines · HA 6307 Depart at 7:00am from Portland (PDX) Fly for 2h 32m Arrive at 9:32am in San Diego (SAN)

Mon Oct 20th 2025 Hawaiian Airlines · HA 6401 Depart at 10:32am from San Diego (SAN) Fly for 2h 28m Arrive at 2:00pm in Denver (DEN)

Mon Oct 20th 2025 Hawaiian Airlines · HA 6386 Depart at 2:47pm from Portland (PDX) Fly for 2h 26m Arrive at 5:13pm in San Diego (SAN)

Mon Oct 20th 2025 Hawaiian Airlines · HA 6403 Depart at 8:19pm from San Diego (SAN) Fly for 2h 28m Arrive at 11:47pm in Denver (DEN)

Sat Oct 18th 2025 Alaska Airlines · AS 499 Depart at 6:05am from Portland (PDX) Fly for 1h 1m Arrive at 7:06am in Seattle (SEA)

Sat Oct 18th 2025 Alaska Airlines · AS 682 Depart at 8:02am from Seattle (SEA) Fly for 2h 53m Arrive at 11:55am in Denver (DEN)

Mon Oct 20th 2025 Alaska Airlines · AS 1074 Depart at 7:00am from Portland (PDX) Fly for 2h 32m Arrive at 9:32am in San Diego (SAN)

Mon Oct 20th 2025 Alaska Airlines · AS 1068 Depart at 10:32am from San Diego (SAN) Fly for 2h 28m Arrive at 2:00pm in Denver (DEN)

Fri Oct 17th 2025 Frontier Airlines · F9 2554 Depart at 8:57am from Portland (PDX) Fly for 2h 38m Arrive at 12:35pm in Denver (DEN)

Fri Oct 17th 2025 Frontier Airlines · F9 1790 Depart at 6:05am from Portland (PDX) Fly for 2h 41m Arrive at 9:46am in Denver (DEN)

Mon Oct 20th 2025 Frontier Airlines · F9 3336 Depart at 6:43pm from Portland (PDX) Fly for 2h 22m Arrive at 9:05pm in Ontario (ONT)

Tue Oct 21st 2025 Frontier Airlines · F9 1500 Depart at 12:59am from Ontario (ONT) Fly for 2h 21m Arrive at 4:20am in Denver (DEN)

Sun Oct 19th 2025 Frontier Airlines · F9 3336 Depart at 6:43pm from Portland (PDX) Fly for 2h 22m Arrive at 9:05pm in Ontario (ONT)

Mon Oct 20th 2025 Frontier Airlines · F9 1500 Depart at 12:59am from Ontario (ONT) Fly for 2h 21m Arrive at 4:20am in Denver (DEN)

Thu Oct 16th 2025 Hawaiian Airlines · HA 6337 Depart at 7:25am from Portland (PDX) Fly for 2h 33m Arrive at 10:58am in Denver (DEN)

Fri Oct 17th 2025 Hawaiian Airlines · HA 6337 Depart at 7:25am from Portland (PDX) Fly for 2h 33m Arrive at 10:58am in Denver (DEN)

Sat Oct 18th 2025 United Airlines · UA 2190 Depart at 4:07pm from Portland (PDX) Fly for 2h 33m Arrive at 7:40pm in Denver (DEN)

Sat Oct 18th 2025 United Airlines · UA 459 Depart at 5:00am from Portland (PDX) Fly for 2h 34m Arrive at 8:34am in Denver (DEN)

Fri Oct 17th 2025 Frontier Airlines · F9 3336 Depart at 6:43pm from Portland (PDX) Fly for 2h 22m Arrive at 9:05pm in Ontario (ONT)

Sat Oct 18th 2025 Frontier Airlines · F9 1500 Depart at 12:59am from Ontario (ONT) Fly for 2h 21m Arrive at 4:20am in Denver (DEN)

Thu Oct 16th 2025 Alaska Airlines · AS 1136 Depart at 7:25am from Portland (PDX) Fly for 2h 33m Arrive at 10:58am in Denver (DEN)

Fri Oct 17th 2025 Alaska Airlines · AS 1136 Depart at 7:25am from Portland (PDX) Fly for 2h 33m Arrive at 10:58am in Denver (DEN)

Fri Oct 17th 2025 Hawaiian Airlines · HA 6386 Depart at 2:47pm from Portland (PDX) Fly for 2h 26m Arrive at 5:13pm in San Diego (SAN)

Fri Oct 17th 2025 Hawaiian Airlines · HA 6403 Depart at 8:19pm from San Diego (SAN) Fly for 2h 28m Arrive at 11:47pm in Denver (DEN)

Thu Oct 16th 2025 Frontier Airlines · F9 3160 Depart at 11:08am from Portland (PDX) Fly for 2h 37m Arrive at 1:45pm in Phoenix (PHX)

Thu Oct 16th 2025 Frontier Airlines · F9 1820 Depart at 6:25pm from Phoenix (PHX) Fly for 1h 53m Arrive at 9:18pm in Denver (DEN)

Thu Oct 16th 2025 United Airlines · UA 2190 Depart at 4:07pm from Portland (PDX) Fly for 2h 33m Arrive at 7:40pm in Denver (DEN)

Fri Oct 17th 2025 United Airlines · UA 2190 Depart at 4:07pm from Portland (PDX) Fly for 2h 33m Arrive at 7:40pm in Denver (DEN)

Thu Oct 16th 2025 United Airlines · UA 459 Depart at 5:00am from Portland (PDX) Fly for 2h 34m Arrive at 8:34am in Denver (DEN)

Fri Oct 17th 2025 United Airlines · UA 459 Depart at 5:00am from Portland (PDX) Fly for 2h 34m Arrive at 8:34am in Denver (DEN)

Thu Oct 16th 2025 United Airlines · UA 2334 Depart at 6:25pm from Portland (PDX) Fly for 2h 34m Arrive at 9:59pm in Denver (DEN)

Mon Oct 20th 2025 United Airlines · UA 2334 Depart at 6:25pm from Portland (PDX) Fly for 2h 34m Arrive at 9:59pm in Denver (DEN)

Mon Oct 20th 2025 United Airlines · UA 459 Depart at 5:00am from Portland (PDX) Fly for 2h 34m Arrive at 8:34am in Denver (DEN)

Sun Oct 19th 2025 United Airlines · UA 459 Depart at 5:00am from Portland (PDX) Fly for 2h 34m Arrive at 8:34am in Denver (DEN)

Fri Oct 17th 2025 United Airlines · UA 2334 Depart at 6:25pm from Portland (PDX) Fly for 2h 34m Arrive at 9:59pm in Denver (DEN)

Thu Oct 16th 2025 United Airlines · UA 2375 Depart at 8:35am from Portland (PDX) Fly for 2h 34m Arrive at 12:09pm in Denver (DEN)

Mon Oct 20th 2025 Hawaiian Airlines · HA 6260 Depart at 3:30pm from Portland (PDX) Fly for 1h 0m Arrive at 4:30pm in Seattle (SEA)

Mon Oct 20th 2025 Hawaiian Airlines · HA 6654 Depart at 5:59pm from Seattle (SEA) Fly for 2h 47m Arrive at 9:46pm in Denver (DEN)

Mon Oct 20th 2025 Hawaiian Airlines · HA 6352 Depart at 9:40pm from Portland (PDX) Fly for 2h 17m Arrive at 11:57pm in Las Vegas (LAS)

Tue Oct 21st 2025 Hawaiian Airlines · HA 4946 Depart at 7:00am from Las Vegas (LAS) Fly for 1h 15m Arrive at 8:15am in San Diego (SAN)

Tue Oct 21st 2025 Hawaiian Airlines · HA 6401 Depart at 10:32am from San Diego (SAN) Fly for 2h 28m Arrive at 2:00pm in Denver (DEN)

Fri Oct 17th 2025 Frontier Airlines · F9 3192 Depart at 11:08am from Portland (PDX) Fly for 1h 55m Arrive at 2:03pm in Salt Lake City (SLC)

Fri Oct 17th 2025 Frontier Airlines · F9 3982 Depart at 4:03pm from Salt Lake City (SLC) Fly for 1h 38m Arrive at 5:41pm in Denver (DEN)

Thu Oct 16th 2025 Hawaiian Airlines · HA 6338 Depart at 2:32pm from Portland (PDX) Fly for 2h 30m Arrive at 6:02pm in Denver (DEN)

Thu Oct 16th 2025 United Airlines · UA 2293 Depart at 10:50am from Portland (PDX) Fly for 2h 34m Arrive at 2:24pm in Denver (DEN)

Sat Oct 18th 2025 Hawaiian Airlines · HA 6307 Depart at 7:00am from Portland (PDX) Fly for 2h 32m Arrive at 9:32am in San Diego (SAN)

Sat Oct 18th 2025 Hawaiian Airlines · HA 6401 Depart at 10:32am from San Diego (SAN) Fly for 2h 28m Arrive at 2:00pm in Denver (DEN)

Mon Oct 20th 2025 Hawaiian Airlines · HA 6414 Depart at 10:00pm from Portland (PDX) Fly for 1h 4m Arrive at 11:04pm in Seattle (SEA)

Tue Oct 21st 2025 Hawaiian Airlines · HA 6555 Depart at 8:02am from Seattle (SEA) Fly for 2h 53m Arrive at 11:55am in Denver (DEN)

Mon Oct 20th 2025 United Airlines · UA 2190 Depart at 4:07pm from Portland (PDX) Fly for 2h 33m Arrive at 7:40pm in Denver (DEN)

Mon Oct 20th 2025 United Airlines · UA 2293 Depart at 10:50am from Portland (PDX) Fly for 2h 34m Arrive at 2:24pm in Denver (DEN)

Mon Oct 20th 2025 United Airlines · UA 2375 Depart at 8:35am from Portland (PDX) Fly for 2h 34m Arrive at 12:09pm in Denver (DEN)

Thu Oct 16th 2025 United Airlines · UA 2254 Depart at 12:53pm from Portland (PDX) Fly for 2h 34m Arrive at 4:27pm in Denver (DEN)

Fri Oct 17th 2025 United Airlines · UA 2375 Depart at 8:35am from Portland (PDX) Fly for 2h 35m Arrive at 12:10pm in Denver (DEN)

Sat Oct 18th 2025 Hawaiian Airlines · HA 6418 Depart at 10:45am from Portland (PDX) Fly for 1h 2m Arrive at 11:47am in Seattle (SEA)

Sat Oct 18th 2025 Hawaiian Airlines · HA 6651 Depart at 1:35pm from Seattle (SEA) Fly for 2h 46m Arrive at 5:21pm in Denver (DEN)

Sat Oct 18th 2025 United Airlines · UA 2375 Depart at 8:35am from Portland (PDX) Fly for 2h 34m Arrive at 12:09pm in Denver (DEN)

Fri Oct 17th 2025 United Airlines · UA 2293 Depart at 10:50am from Portland (PDX) Fly for 2h 34m Arrive at 2:24pm in Denver (DEN)

Fri Oct 17th 2025 United Airlines · UA 2254 Depart at 12:53pm from Portland (PDX) Fly for 2h 34m Arrive at 4:27pm in Denver (DEN)

Sat Oct 18th 2025 United Airlines · UA 2254 Depart at 12:53pm from Portland (PDX) Fly for 2h 34m Arrive at 4:27pm in Denver (DEN)

Sat Oct 18th 2025 United Airlines · UA 2293 Depart at 10:50am from Portland (PDX) Fly for 2h 35m Arrive at 2:25pm in Denver (DEN)

Sat Oct 18th 2025 United Airlines · UA 361 Depart at 5:15pm from Portland (PDX) Fly for 1h 51m Arrive at 7:06pm in San Francisco (SFO)

Sat Oct 18th 2025 United Airlines · UA 1871 Depart at 8:52pm from San Francisco (SFO) Fly for 2h 37m Arrive at 12:29am in Denver (DEN)

Sun Oct 19th 2025 Hawaiian Airlines · HA 6386 Depart at 2:47pm from Portland (PDX) Fly for 2h 26m Arrive at 5:13pm in San Diego (SAN)

Sun Oct 19th 2025 Hawaiian Airlines · HA 6403 Depart at 8:19pm from San Diego (SAN) Fly for 2h 28m Arrive at 11:47pm in Denver (DEN)

Mon Oct 20th 2025 United Airlines · UA 2254 Depart at 12:53pm from Portland (PDX) Fly for 2h 34m Arrive at 4:27pm in Denver (DEN)

Sun Oct 19th 2025 United Airlines · UA 2334 Depart at 6:25pm from Portland (PDX) Fly for 2h 34m Arrive at 9:59pm in Denver (DEN)

Mon Oct 20th 2025 United Airlines · UA 2615 Depart at 7:35pm from Portland (PDX) Fly for 1h 51m Arrive at 9:26pm in San Francisco (SFO)

Tue Oct 21st 2025 United Airlines · UA 2420 Depart at 5:05am from San Francisco (SFO) Fly for 2h 35m Arrive at 8:40am in Denver (DEN)

Sun Oct 19th 2025 Hawaiian Airlines · HA 6418 Depart at 10:45am from Portland (PDX) Fly for 1h 2m Arrive at 11:47am in Seattle (SEA)

Sun Oct 19th 2025 Hawaiian Airlines · HA 6651 Depart at 1:35pm from Seattle (SEA) Fly for 2h 46m Arrive at 5:21pm in Denver (DEN)

Sun Oct 19th 2025 United Airlines · UA 2190 Depart at 4:07pm from Portland (PDX) Fly for 2h 33m Arrive at 7:40pm in Denver (DEN)

Sun Oct 19th 2025 United Airlines · UA 2375 Depart at 8:35am from Portland (PDX) Fly for 2h 34m Arrive at 12:09pm in Denver (DEN)

Sun Oct 19th 2025 United Airlines · UA 2293 Depart at 10:50am from Portland (PDX) Fly for 2h 34m Arrive at 2:24pm in Denver (DEN)

Sun Oct 19th 2025 United Airlines · UA 2254 Depart at 12:53pm from Portland (PDX) Fly for 2h 34m Arrive at 4:27pm in Denver (DEN)

Mon Oct 20th 2025 Alaska Airlines · AS 728 Depart at 9:40pm from Portland (PDX) Fly for 2h 17m Arrive at 11:57pm in Las Vegas (LAS)

Tue Oct 21st 2025 United Airlines · UA 596 Depart at 6:00am from Las Vegas (LAS) Fly for 1h 59m Arrive at 8:59am in Denver (DEN)