The Houses of Parliament and Big Ben in London, with a red double-decker bus crossing the Lambeth Bridge.

CA $399 Cheap Flights from Washington (WAS) to London (LON)

View CA $399 flight on Thu, Mar 18, 2027

Popular airlines from Washington to London

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  • Cheap Flights from Washington to London (WAS-LON)

    Prices were available within the past 7 days and start at CA $399 for one-way flights and CA $908 for roundtrip, for the period specified. Prices and availability are subject to change.

    All deals

    One way

    Roundtrip

    Select TAP Portugal flight, departing Sun, Nov 29 from Washington to London, returning Sun, Dec 6, priced at CA $908 Found 4 days ago

    Sun, Nov 29 - Sun, Dec 6 · IAD · LHR · Roundtrip

    Select TAP Portugal flight, departing Wed, Mar 3 from Washington to London, returning Wed, Mar 10, priced at CA $910 Found 1 day ago

    Wed, Mar 3 - Wed, Mar 10 · IAD · LGW · Roundtrip

    Select Icelandair flight, departing Thu, Nov 26 from Baltimore to London, returning Wed, Dec 2, priced at CA $1,006 Found 2 days ago

    Thu, Nov 26 - Wed, Dec 2 · BWI · LHR · Roundtrip

    Select Icelandair flight, departing Thu, Feb 11 from Baltimore to London, returning Tue, Feb 16, priced at CA $1,025 Found 1 day ago

    Thu, Feb 11 - Tue, Feb 16 · BWI · LGW · Roundtrip

    Select Swiss International Air Lines flight, departing Tue, Apr 13 from Washington to London, returning Thu, Apr 15, priced at CA $1,119 Found 6 hours ago

    Tue, Apr 13 - Thu, Apr 15 · IAD · LCY · Roundtrip

    Select JetBlue Airways flight, departing Wed, Mar 3 from Washington to London, returning Wed, Mar 10, priced at CA $1,167 Found 4 days ago

    Wed, Mar 3 - Wed, Mar 10 · DCA · LHR · Roundtrip

    Select Royal Air Maroc flight, departing Sun, Nov 29 from Washington to London, returning Sun, Dec 6, priced at CA $1,238 Found 4 days ago

    Sun, Nov 29 - Sun, Dec 6 · IAD · STN · Roundtrip

    Select American Airlines flight, departing Tue, Jul 27 from Washington to London, returning Tue, Aug 24, priced at CA $1,239 Found 1 day ago

    Tue, Jul 27 - Tue, Aug 24 · DCA · LGW · Roundtrip

    Select American Airlines flight, departing Wed, Feb 24 from Baltimore to London, returning Wed, Mar 3, priced at CA $1,286 Found 2 days ago

    Wed, Feb 24 - Wed, Mar 3 · BWI · LHR · Roundtrip

    Select Delta flight, departing Thu, Mar 18 from Baltimore to London, returning Thu, Mar 25, priced at CA $1,563 Found 4 days ago

    Thu, Mar 18 - Thu, Mar 25 · BWI · LCY · Roundtrip

    Alternative airports near London

    Prices were available within the past 7 days. Prices and availability are subject to change.

    Select flight to Heathrow LHR. Cheapest option available. Average driving time to city centre is 34 minutes. Flights from CA $1,058

    34 min

    Select flight to Gatwick LGW. Average driving time to city centre is 51 minutes. Flights from CA $1,780

    51 min

    Select flight to London City LCY. Closest option available. Average driving time to city centre is 21 minutes. Flights from CA $2,218

    21 min

    Find the cheapest month to fly from Washington (WAS) to London (LON)

    April is typically the cheapest month to fly

    From CA $711 - CA $1,151 per traveller.

    View flights in April

    Insights are based on prices from searches for economy trips of 10 days or less on our sites in the last 12 months. Insights are informative only and current prices may differ.

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    Washington to London Flights

    The easy way to book your flights from Washington to London

    With Expedia, it’s simple to find and book flights to London from Washington whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 10 airlines that cover this route. There are nonstop flights to LON-All Airports, too.

    Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Washington to London today, tomorrow, or this week.

    Save dollars with cheap flights from WAS-All Airports, WAS to LON-All Airports, LON

    Sort your search results by price to find great deals on your flight from Washington to London—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to London from Washington currently is just CA $908 rising to CA $1,563.

    Here are more money-saving tips:

    • Fly in November when flight prices are normally at their lowest
    • Book about a month to 6 weeks before you travel for the best prices to London
    • Avoid peak season and weekends when flights can cost more
    • Early morning and late-night flights are sometimes cheaper, so try varying your travel times
    • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!

    Reasons to choose Expedia for your flight to London from Washington

    Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to London with Expedia today.

    Travel information

    Origin airportWashington Dulles International Airport
    Destination airportHeathrow Airport
    Distance5,901 km away
    Airlines servingBritish Airways, Austrian Airlines, Lufthansa, Aer Lingus, Swiss International Air Lines, TAP Portugal, Finnair, Iberia, Brussels Airlines, Icelandair, Air Canada, SAS, Turkish Airlines, Alaska Airlines, Virgin Atlantic, KLM, United, American Airlines, Delta, Air France, Royal Air Maroc, Ethiopian Airlines, ITA Airways, Aeromexico, Avianca
    Popular airlineBritish Airways
    Roundtrip priceCA $908
    Average flight time7 hours 21 mins

    Explore a world of travel with Expedia

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