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YXU - WAS

Find cheap flights from London to Washington, D.C. from $427

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Washington, D.C. departing on 7/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Wed 6/12
Wed 6/19

Search hundreds of travel sites at once for deals on flights to Washington, D.C.

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Washington, D.C., as well as popular online travel agencies
In the last 7 days travelers have searched 41,771,603 times on KAYAK, and here is why:

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from London to Washington, D.C. (YXU-WAS)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to Washington, D.C. that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
3:20 pm - 8:19 pmYXU-IAD
4h 59m1 stop
4:00 pm - 9:35 pmIAD-YXU
5h 35m1 stop
$427Air Canada
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Mon, Jul 15 - Mon, Jul 22
3:25 pm - 9:16 pmYXU-IAD
5h 51m1 stop
6:14 am - 2:46 pmIAD-YXU
8h 32m2 stops
$430United Airlines
Find Deal
Thu, Jun 6 - Mon, Jun 10
3:25 pm - 12:47 amYXU-IAD
9h 22m2 stops
6:14 am - 2:46 pmIAD-YXU
8h 32m2 stops
$436United Airlines
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Thu, Jun 6 - Mon, Jun 10
3:25 pm - 8:15 pmYXU-IAD
4h 50m1 stop
6:30 am - 2:46 pmIAD-YXU
8h 16m1 stop
$451Air Canada
Find Deal
Thu, Jun 6 - Mon, Jun 10
3:20 pm - 7:55 pmYXU-DCA
4h 35m1 stop
9:15 am - 2:45 pmDCA-YXU
5h 30m1 stop
$453Air Canada
Find Deal
Sat, Aug 24 - Wed, Aug 28
3:20 pm - 9:21 pmYXU-IAD
6h 01m1 stop
4:00 pm - 9:37 pmIAD-YXU
5h 37m1 stop
$453Air Canada
Find Deal
Sat, Aug 31 - Wed, Sep 4
9:50 am - 3:19 pmYXU-IAD
5h 29m1 stop
6:30 am - 2:45 pmIAD-YXU
8h 15m1 stop
$466Air Canada
Find Deal
Wed, Jun 26 - Sun, Jun 30
9:50 am - 8:29 pmYXU-IAD
10h 39m2 stops
9:55 am - 5:47 pmIAD-YXU
7h 52m2 stops
$514Air Canada
Find Deal
Sat, Aug 31 - Wed, Sep 4
9:50 am - 12:45 amYXU-BWI
14h 55m2 stops
12:21 pm - 9:16 amBWI-YXU
20h 55m2 stops
Thu, Jun 6 - Mon, Jun 10
3:20 pm - 12:47 amYXU-IAD
9h 27m2 stops
6:30 am - 2:45 pmIAD-YXU
8h 15m1 stop
Wed, Jun 26 - Sun, Jun 30

Good to know

Low season

March

High season

October

Cheapest flight

$427
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from London to Washington Dulles Airport

When to book flights from London to Washington, D.C.

Are your dates flexible? Find out the best times to travel from London to Washington, D.C. based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from London to Washington, D.C.

  • What is the cheapest flight from London, Ontario to Washington, D.C.?

    In the last 3 days, the lowest price for a flight from London, Ontario to Washington, D.C. was $427 for a round-trip ticket.

  • Do I need a passport to fly between London and Washington, D.C.?

    Yes, you'll most likely have to show a valid passport before boarding the plane in London and on arrival in Washington, D.C..

  • Which airports will I be using when flying from London to Washington, D.C.?

    On your way to Washington, D.C., you’ll fly out from London. You’ll be landing in one of Washington, D.C.’s 2 airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl.

  • Which aircraft models fly most regularly from London to Washington, D.C.?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London to Washington, D.C.?

    Star Alliance is the only airline alliance operating flights between London and Washington, D.C..

  • How does KAYAK find such low prices on flights from London to Washington, D.C.?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Washington, D.C.?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from London is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to Washington, D.C.?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Washington, D.C.?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from London to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from London to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to Washington, D.C.? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.0
Air CanadaOverall score based on 6934 reviews
6.2Food
6.8Entertainment
7.2Boarding
7.8Crew
7.0Comfort
Airline reviews

Rude Customer Service at checkin, 90 minute limit in flight check in is too strict. I was in line for 30 minutes because of slow/insufficient workers. Somewhere I got to the the counter of course the employee warned me about the 90 minutes. People were cutting the lines. No one did anything.

10.0 ExcellentAnonymous, May 2024YYZ - BOS
Read more about Air Canada reviews

Rude Customer Service at checkin, 90 minute limit in flight check in is too strict. I was in line for 30 minutes because of slow/insufficient workers. Somewhere I got to the the counter of course the employee warned me about the 90 minutes. People were cutting the lines. No one did anything.

Everything was great. I really like how they had their safety film set up showing you the beauty of the country.

I liked the early check in. Flight was a bit bumpy due yo weather. Overall, everything went well.

Limited snack options cause the snack vendor was on strike

It was an excellent experience, traveling from Toronto to Denver with United.

Ontime boarding. Almost 1 hour take off delay. We could have boarded slightly later since the pilots were in traffic

This was the first AC flight in a long time that we experienced no delays or frustrations. The gate attendant was extremely polite and accommodating to my husband who has Parkinson’s disease which made boarding extremely stress free. Flight departed ON TIME and was a smooth ride. If only all my AC experiences could be like this.

I didn’t like the fact that all the customs officers went to lunch so I was in line for 90 minutes due to where the staff directed me. We were told three very different reasons for why the plane was delayed. It was a crowded plane with difficult storage situations for the Carry On bags. The Air Canada airline staff were all very good and professional. I was so disappointed in my cheese and fruit box as the cheese had molded and the fruit wasn’t fresh so I couldn’t eat the majority of the food. This was the last meal I could find as the restaurants had closed when I got in to my destination. I think you could work on improving the food quality.

Once again my complaint is how close the seats are together. Also, the bathrooms were not very clean by the second half of the flight.

Excellent in flight service, perhaps the best we've ever had. Business class feels tired and needs improvement to compete with other airlines. The food looked good but tasted terrible. Check in was quick, the flight arrived early and our luggage was on our flight with us.

London - Washington, D.C. Flights

Departure:

London (undefined)Canada

Cabin classes: