Flights from Washington to London (DCA to LHR)

Discover more affordable routes and cheaper dates from Washington to London (DCA to LHR) within a date range.

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  • US$1214
    Air FranceAir France
    5:47pm - 8:55am
    Wed Apr 16th 2025
    10h 8m
    Washington, D.C. (DCA) → London (LHR)
    1 Stop
    British AirwaysKLM Royal Dutch AirlinesKLM Royal Dutch Airlines
    6:15am - 6:12pm
    Mon Sep 22nd 2025
    16h 57m
    London (LHR) → Washington, D.C. (DCA)
    2 Stops

    Wed Apr 16th 2025 Air France · AF 2556 Depart at 5:47pm from Washington, D.C. (DCA) Fly for 1h 38m Arrive at 7:25pm in Detroit (DTW)

    Layover in Detroit for 0h 50m

    Wed Apr 16th 2025 Air France · AF 3639 Depart at 8:15pm from Detroit (DTW) Fly for 7h 40m Arrive at 8:55am in London (LHR)

    Stay in London for 157 nights

    Mon Sep 22nd 2025 British Airways · BA 456 Depart at 6:15am from London (LHR) Fly for 2h 25m Arrive at 9:40am in Madrid (MAD)

    Layover in Madrid for 3h 0m

    Mon Sep 22nd 2025 KLM Royal Dutch Airlines · KL 6127 Depart at 12:40pm from Madrid (MAD) Fly for 8h 15m Arrive at 2:55pm in New York (JFK)

    Layover in New York for 1h 35m

    Mon Sep 22nd 2025 KLM Royal Dutch Airlines · KL 5807 Depart at 4:30pm from New York (JFK) Fly for 1h 42m Arrive at 6:12pm in Washington, D.C. (DCA)

  • US$1214
    Air FranceAir France
    5:47pm - 8:55am
    Wed Apr 16th 2025
    10h 8m
    Washington, D.C. (DCA) → London (LHR)
    1 Stop
    British AirwaysAir FranceAir France
    6:15am - 6:12pm
    Sat Sep 20th 2025
    16h 57m
    London (LHR) → Washington, D.C. (DCA)
    2 Stops

    Wed Apr 16th 2025 Air France · AF 2556 Depart at 5:47pm from Washington, D.C. (DCA) Fly for 1h 38m Arrive at 7:25pm in Detroit (DTW)

    Layover in Detroit for 0h 50m

    Wed Apr 16th 2025 Air France · AF 3639 Depart at 8:15pm from Detroit (DTW) Fly for 7h 40m Arrive at 8:55am in London (LHR)

    Stay in London for 155 nights

    Sat Sep 20th 2025 British Airways · BA 456 Depart at 6:15am from London (LHR) Fly for 2h 25m Arrive at 9:40am in Madrid (MAD)

    Layover in Madrid for 3h 0m

    Sat Sep 20th 2025 Air France · AF 3668 Depart at 12:40pm from Madrid (MAD) Fly for 8h 15m Arrive at 2:55pm in New York (JFK)

    Layover in New York for 1h 35m

    Sat Sep 20th 2025 Air France · AF 3071 Depart at 4:30pm from New York (JFK) Fly for 1h 42m Arrive at 6:12pm in Washington, D.C. (DCA)

  • US$1214
    KLM Royal Dutch AirlinesKLM Royal Dutch Airlines
    4:55pm - 8:05am
    Wed Apr 16th 2025
    10h 10m
    Washington, D.C. (DCA) → London (LHR)
    1 Stop
    British AirwaysKLM Royal Dutch AirlinesKLM Royal Dutch Airlines
    6:15am - 6:12pm
    Mon Sep 22nd 2025
    16h 57m
    London (LHR) → Washington, D.C. (DCA)
    2 Stops

    Wed Apr 16th 2025 KLM Royal Dutch Airlines · KL 7626 Depart at 4:55pm from Washington, D.C. (DCA) Fly for 1h 48m Arrive at 6:43pm in Boston (BOS)

    Layover in Boston for 1h 32m

    Wed Apr 16th 2025 KLM Royal Dutch Airlines · KL 2513 Depart at 8:15pm from Boston (BOS) Fly for 6h 50m Arrive at 8:05am in London (LHR)

    Stay in London for 157 nights

    Mon Sep 22nd 2025 British Airways · BA 456 Depart at 6:15am from London (LHR) Fly for 2h 25m Arrive at 9:40am in Madrid (MAD)

    Layover in Madrid for 3h 0m

    Mon Sep 22nd 2025 KLM Royal Dutch Airlines · KL 6127 Depart at 12:40pm from Madrid (MAD) Fly for 8h 15m Arrive at 2:55pm in New York (JFK)

    Layover in New York for 1h 35m

    Mon Sep 22nd 2025 KLM Royal Dutch Airlines · KL 5807 Depart at 4:30pm from New York (JFK) Fly for 1h 42m Arrive at 6:12pm in Washington, D.C. (DCA)

  • US$1214
    KLM Royal Dutch AirlinesKLM Royal Dutch Airlines
    4:55pm - 8:05am
    Wed Apr 16th 2025
    10h 10m
    Washington, D.C. (DCA) → London (LHR)
    1 Stop
    British AirwaysAir FranceAir France
    6:15am - 6:12pm
    Sat Sep 20th 2025
    16h 57m
    London (LHR) → Washington, D.C. (DCA)
    2 Stops

    Wed Apr 16th 2025 KLM Royal Dutch Airlines · KL 7626 Depart at 4:55pm from Washington, D.C. (DCA) Fly for 1h 48m Arrive at 6:43pm in Boston (BOS)

    Layover in Boston for 1h 32m

    Wed Apr 16th 2025 KLM Royal Dutch Airlines · KL 2513 Depart at 8:15pm from Boston (BOS) Fly for 6h 50m Arrive at 8:05am in London (LHR)

    Stay in London for 155 nights

    Sat Sep 20th 2025 British Airways · BA 456 Depart at 6:15am from London (LHR) Fly for 2h 25m Arrive at 9:40am in Madrid (MAD)

    Layover in Madrid for 3h 0m

    Sat Sep 20th 2025 Air France · AF 3668 Depart at 12:40pm from Madrid (MAD) Fly for 8h 15m Arrive at 2:55pm in New York (JFK)

    Layover in New York for 1h 35m

    Sat Sep 20th 2025 Air France · AF 3071 Depart at 4:30pm from New York (JFK) Fly for 1h 42m Arrive at 6:12pm in Washington, D.C. (DCA)

  • US$1676
    FinnairFinnair
    6:59pm - 8:10am
    Thu Mar 27th 2025
    9h 11m
    Washington, D.C. (DCA) → London (LHR)
    1 Stop
    FinnairFinnair
    4:20pm - 11:00pm
    Mon Sep 22nd 2025
    11h 40m
    London (LHR) → Washington, D.C. (DCA)
    1 Stop

    Thu Mar 27th 2025 Finnair · AY 4254 Depart at 6:59pm from Washington, D.C. (DCA) Fly for 1h 21m Arrive at 8:20pm in New York (JFK)

    Layover in New York for 0h 45m

    Thu Mar 27th 2025 Finnair · AY 5516 Depart at 9:05pm from New York (JFK) Fly for 7h 5m Arrive at 8:10am in London (LHR)

    Stay in London for 178 nights

    Mon Sep 22nd 2025 Finnair · AY 5513 Depart at 4:20pm from London (LHR) Fly for 8h 5m Arrive at 7:25pm in New York (JFK)

    Layover in New York for 2h 3m

    Mon Sep 22nd 2025 Finnair · AY 4119 Depart at 9:28pm from New York (JFK) Fly for 1h 32m Arrive at 11:00pm in Washington, D.C. (DCA)

  • US$1735
    FinnairFinnair
    6:59pm - 8:10am
    Thu Mar 27th 2025
    9h 11m
    Washington, D.C. (DCA) → London (LHR)
    1 Stop
    FinnairFinnair
    4:20pm - 11:00pm
    Sat Sep 20th 2025
    11h 40m
    London (LHR) → Washington, D.C. (DCA)
    1 Stop

    Thu Mar 27th 2025 Finnair · AY 4254 Depart at 6:59pm from Washington, D.C. (DCA) Fly for 1h 21m Arrive at 8:20pm in New York (JFK)

    Layover in New York for 0h 45m

    Thu Mar 27th 2025 Finnair · AY 5516 Depart at 9:05pm from New York (JFK) Fly for 7h 5m Arrive at 8:10am in London (LHR)

    Stay in London for 176 nights

    Sat Sep 20th 2025 Finnair · AY 5513 Depart at 4:20pm from London (LHR) Fly for 8h 5m Arrive at 7:25pm in New York (JFK)

    Layover in New York for 2h 3m

    Sat Sep 20th 2025 Finnair · AY 4119 Depart at 9:28pm from New York (JFK) Fly for 1h 32m Arrive at 11:00pm in Washington, D.C. (DCA)

  • US$2176
    Air CanadaAir Canada
    4:10pm - 6:30am
    Wed Apr 2nd 2025
    9h 20m
    Washington, D.C. (DCA) → London (LHR)
    1 Stop
    Air CanadaAir Canada
    12:05pm - 6:04pm
    Sat Sep 20th 2025
    10h 59m
    London (LHR) → Washington, D.C. (DCA)
    1 Stop

    Wed Apr 2nd 2025 Air Canada · AC 8824 Depart at 4:10pm from Washington, D.C. (DCA) Fly for 1h 48m Arrive at 5:58pm in Montreal (YUL)

    Layover in Montreal for 0h 52m

    Wed Apr 2nd 2025 Air Canada · AC 866 Depart at 6:50pm from Montreal (YUL) Fly for 6h 40m Arrive at 6:30am in London (LHR)

    Stay in London for 170 nights

    Sat Sep 20th 2025 Air Canada · AC 855 Depart at 12:05pm from London (LHR) Fly for 7h 50m Arrive at 2:55pm in Toronto (YYZ)

    Layover in Toronto for 1h 35m

    Sat Sep 20th 2025 Air Canada · AC 8782 Depart at 4:30pm from Toronto (YYZ) Fly for 1h 34m Arrive at 6:04pm in Washington, D.C. (DCA)

  • US$2178
    Air CanadaAir Canada
    4:10pm - 6:30am
    Tue Apr 1st 2025
    9h 20m
    Washington, D.C. (DCA) → London (LHR)
    1 Stop
    Air CanadaAir Canada
    12:05pm - 6:04pm
    Sat Sep 20th 2025
    10h 59m
    London (LHR) → Washington, D.C. (DCA)
    1 Stop

    Tue Apr 1st 2025 Air Canada · AC 8824 Depart at 4:10pm from Washington, D.C. (DCA) Fly for 1h 48m Arrive at 5:58pm in Montreal (YUL)

    Layover in Montreal for 0h 52m

    Tue Apr 1st 2025 Air Canada · AC 866 Depart at 6:50pm from Montreal (YUL) Fly for 6h 40m Arrive at 6:30am in London (LHR)

    Stay in London for 171 nights

    Sat Sep 20th 2025 Air Canada · AC 855 Depart at 12:05pm from London (LHR) Fly for 7h 50m Arrive at 2:55pm in Toronto (YYZ)

    Layover in Toronto for 1h 35m

    Sat Sep 20th 2025 Air Canada · AC 8782 Depart at 4:30pm from Toronto (YYZ) Fly for 1h 34m Arrive at 6:04pm in Washington, D.C. (DCA)

  • US$2183
    Air CanadaAir Canada
    4:10pm - 6:30am
    Wed Apr 2nd 2025
    9h 20m
    Washington, D.C. (DCA) → London (LHR)
    1 Stop
    Air CanadaAir Canada
    12:05pm - 6:04pm
    Fri Sep 19th 2025
    10h 59m
    London (LHR) → Washington, D.C. (DCA)
    1 Stop

    Wed Apr 2nd 2025 Air Canada · AC 8824 Depart at 4:10pm from Washington, D.C. (DCA) Fly for 1h 48m Arrive at 5:58pm in Montreal (YUL)

    Layover in Montreal for 0h 52m

    Wed Apr 2nd 2025 Air Canada · AC 866 Depart at 6:50pm from Montreal (YUL) Fly for 6h 40m Arrive at 6:30am in London (LHR)

    Stay in London for 169 nights

    Fri Sep 19th 2025 Air Canada · AC 855 Depart at 12:05pm from London (LHR) Fly for 7h 50m Arrive at 2:55pm in Toronto (YYZ)

    Layover in Toronto for 1h 35m

    Fri Sep 19th 2025 Air Canada · AC 8782 Depart at 4:30pm from Toronto (YYZ) Fly for 1h 34m Arrive at 6:04pm in Washington, D.C. (DCA)

  • US$2185
    Air CanadaAir Canada
    4:10pm - 6:30am
    Tue Apr 1st 2025
    9h 20m
    Washington, D.C. (DCA) → London (LHR)
    1 Stop
    Air CanadaAir Canada
    12:05pm - 6:04pm
    Fri Sep 19th 2025
    10h 59m
    London (LHR) → Washington, D.C. (DCA)
    1 Stop

    Tue Apr 1st 2025 Air Canada · AC 8824 Depart at 4:10pm from Washington, D.C. (DCA) Fly for 1h 48m Arrive at 5:58pm in Montreal (YUL)

    Layover in Montreal for 0h 52m

    Tue Apr 1st 2025 Air Canada · AC 866 Depart at 6:50pm from Montreal (YUL) Fly for 6h 40m Arrive at 6:30am in London (LHR)

    Stay in London for 170 nights

    Fri Sep 19th 2025 Air Canada · AC 855 Depart at 12:05pm from London (LHR) Fly for 7h 50m Arrive at 2:55pm in Toronto (YYZ)

    Layover in Toronto for 1h 35m

    Fri Sep 19th 2025 Air Canada · AC 8782 Depart at 4:30pm from Toronto (YYZ) Fly for 1h 34m Arrive at 6:04pm in Washington, D.C. (DCA)

  • US$2326
    FinnairFinnair
    6:59pm - 8:10am
    Fri Mar 28th 2025
    9h 11m
    Washington, D.C. (DCA) → London (LHR)
    1 Stop
    Air CanadaAir Canada
    9:30am - 3:51pm
    Sat Sep 20th 2025
    11h 21m
    London (LHR) → Washington, D.C. (DCA)
    1 Stop

    Fri Mar 28th 2025 Finnair · AY 4254 Depart at 6:59pm from Washington, D.C. (DCA) Fly for 1h 21m Arrive at 8:20pm in New York (JFK)

    Layover in New York for 0h 45m

    Fri Mar 28th 2025 Finnair · AY 5516 Depart at 9:05pm from New York (JFK) Fly for 7h 5m Arrive at 8:10am in London (LHR)

    Stay in London for 175 nights

    Sat Sep 20th 2025 Air Canada · AC 867 Depart at 9:30am from London (LHR) Fly for 7h 10m Arrive at 11:40am in Montreal (YUL)

    Layover in Montreal for 2h 20m

    Sat Sep 20th 2025 Air Canada · AC 8823 Depart at 2:00pm from Montreal (YUL) Fly for 1h 51m Arrive at 3:51pm in Washington, D.C. (DCA)

  • US$2332
    FinnairFinnair
    6:59pm - 8:10am
    Fri Mar 28th 2025
    9h 11m
    Washington, D.C. (DCA) → London (LHR)
    1 Stop
    Air CanadaAir Canada
    12:05pm - 6:04pm
    Sat Sep 20th 2025
    10h 59m
    London (LHR) → Washington, D.C. (DCA)
    1 Stop

    Fri Mar 28th 2025 Finnair · AY 4254 Depart at 6:59pm from Washington, D.C. (DCA) Fly for 1h 21m Arrive at 8:20pm in New York (JFK)

    Layover in New York for 0h 45m

    Fri Mar 28th 2025 Finnair · AY 5516 Depart at 9:05pm from New York (JFK) Fly for 7h 5m Arrive at 8:10am in London (LHR)

    Stay in London for 175 nights

    Sat Sep 20th 2025 Air Canada · AC 855 Depart at 12:05pm from London (LHR) Fly for 7h 50m Arrive at 2:55pm in Toronto (YYZ)

    Layover in Toronto for 1h 35m

    Sat Sep 20th 2025 Air Canada · AC 8782 Depart at 4:30pm from Toronto (YYZ) Fly for 1h 34m Arrive at 6:04pm in Washington, D.C. (DCA)

  • US$2339
    FinnairFinnair
    6:59pm - 8:10am
    Fri Mar 28th 2025
    9h 11m
    Washington, D.C. (DCA) → London (LHR)
    1 Stop
    Air CanadaAir Canada
    12:05pm - 6:04pm
    Fri Sep 19th 2025
    10h 59m
    London (LHR) → Washington, D.C. (DCA)
    1 Stop

    Fri Mar 28th 2025 Finnair · AY 4254 Depart at 6:59pm from Washington, D.C. (DCA) Fly for 1h 21m Arrive at 8:20pm in New York (JFK)

    Layover in New York for 0h 45m

    Fri Mar 28th 2025 Finnair · AY 5516 Depart at 9:05pm from New York (JFK) Fly for 7h 5m Arrive at 8:10am in London (LHR)

    Stay in London for 174 nights

    Fri Sep 19th 2025 Air Canada · AC 855 Depart at 12:05pm from London (LHR) Fly for 7h 50m Arrive at 2:55pm in Toronto (YYZ)

    Layover in Toronto for 1h 35m

    Fri Sep 19th 2025 Air Canada · AC 8782 Depart at 4:30pm from Toronto (YYZ) Fly for 1h 34m Arrive at 6:04pm in Washington, D.C. (DCA)

  • US$2339
    FinnairFinnair
    6:59pm - 8:10am
    Thu Mar 27th 2025
    9h 11m
    Washington, D.C. (DCA) → London (LHR)
    1 Stop
    Air CanadaAir Canada
    12:05pm - 6:04pm
    Fri Sep 19th 2025
    10h 59m
    London (LHR) → Washington, D.C. (DCA)
    1 Stop

    Thu Mar 27th 2025 Finnair · AY 4254 Depart at 6:59pm from Washington, D.C. (DCA) Fly for 1h 21m Arrive at 8:20pm in New York (JFK)

    Layover in New York for 0h 45m

    Thu Mar 27th 2025 Finnair · AY 5516 Depart at 9:05pm from New York (JFK) Fly for 7h 5m Arrive at 8:10am in London (LHR)

    Stay in London for 175 nights

    Fri Sep 19th 2025 Air Canada · AC 855 Depart at 12:05pm from London (LHR) Fly for 7h 50m Arrive at 2:55pm in Toronto (YYZ)

    Layover in Toronto for 1h 35m

    Fri Sep 19th 2025 Air Canada · AC 8782 Depart at 4:30pm from Toronto (YYZ) Fly for 1h 34m Arrive at 6:04pm in Washington, D.C. (DCA)

@sarahbb1
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

@eyupitsjohn
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

@oamingsonaa
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
@andy_travels

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

@travelwitbender
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! 💪

@travel.with.wes
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.

Explore Flight Options

FlightList Blog

Flightlist Interviews 7 Travel Experts On Why They Book One Way Flights
Flightlist Interviews 7 Travel Experts On Why They Book One Way Flights
Why I built FlightList & solved my own problem
Why I Built FlightList & Solved My Own Problem

About FlightList

❝Founded by a remote worker and frequent flyer, who discovered that the best deals come from searching with flexible dates across entire countries or regions. Our streamlined platform strips away the clutter found on typical travel sites, offering a clean interface that focuses solely on finding cost-effective flights. Unlike traditional booking sites, FlightList allows users to search by date ranges and broad destinations, unveiling opportunities that rigid parameters often miss. Our filters let travelers tailor searches to their specific needs, whether they're digital nomads seeking their next adventure or budget-conscious explorers maximizing travel funds. We've made finding cheap flights into a quicker and easier experience, empowering users to discover just how far their budget can take them.❞

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