Cheap Flights from Washington (IAD) to London (LHR) from AU$376

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Cheap Flights from Washington (IAD) to London (LHR)

Prices were available within the past 7 days and start at AU$376 for one-way flights and AU$825 for round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Virgin Atlantic
Mon., 6 May - Wed., 15 May
IAD
Washington
LHR
London
AU$825 Return, found 4 days ago
AU$825
Return
found 4 days ago
Select Virgin Atlantic flight, departing Mon., 6 May from Washington to London, returning Wed., 15 May, priced at AU$825 found 4 days ago
Delta
Mon., 6 May - Wed., 15 May
IAD
Washington
LHR
London
AU$828 Return, found 4 days ago
AU$828
Return
found 4 days ago
Select Delta flight, departing Mon., 6 May from Washington to London, returning Wed., 15 May, priced at AU$828 found 4 days ago
Virgin Atlantic
Mon., 6 May - Wed., 15 May
IAD
Washington
LHR
London
AU$835 Return, found 4 days ago
AU$835
Return
found 4 days ago
Select Virgin Atlantic flight, departing Mon., 6 May from Washington to London, returning Wed., 15 May, priced at AU$835 found 4 days ago
Delta
Wed., 8 May - Thu., 16 May
IAD
Washington
LHR
London
AU$840 Return, found 1 day ago
AU$840
Return
found 1 day ago
Select Delta flight, departing Wed., 8 May from Washington to London, returning Thu., 16 May, priced at AU$840 found 1 day ago
Delta
Mon., 6 May - Wed., 15 May
IAD
Washington
LHR
London
AU$844 Return, found 4 days ago
AU$844
Return
found 4 days ago
Select Delta flight, departing Mon., 6 May from Washington to London, returning Wed., 15 May, priced at AU$844 found 4 days ago
Virgin Atlantic
Wed., 8 May - Thu., 16 May
IAD
Washington
LHR
London
AU$847 Return, found 1 day ago
AU$847
Return
found 1 day ago
Select Virgin Atlantic flight, departing Wed., 8 May from Washington to London, returning Thu., 16 May, priced at AU$847 found 1 day ago
Air France
Mon., 6 May - Wed., 15 May
IAD
Washington
LHR
London
AU$896 Return, found 4 days ago
AU$896
Return
found 4 days ago
Select Air France flight, departing Mon., 6 May from Washington to London, returning Wed., 15 May, priced at AU$896 found 4 days ago
KLM
Mon., 6 May - Wed., 15 May
IAD
Washington
LHR
London
AU$898 Return, found 4 days ago
AU$898
Return
found 4 days ago
Select KLM flight, departing Mon., 6 May from Washington to London, returning Wed., 15 May, priced at AU$898 found 4 days ago
TAP Portugal
Tue., 11 Feb. - Sat., 15 Feb.
IAD
Washington
LHR
London
AU$933 Return, found 4 days ago
AU$933
Return
found 4 days ago
Select TAP Portugal flight, departing Tue., 11 Feb. from Washington to London, returning Sat., 15 Feb., priced at AU$933 found 4 days ago
Icelandair
Tue., 30 Apr. - Tue., 21 May
IAD
Washington
LHR
London
AU$942 Return, found 4 days ago
AU$942
Return
found 4 days ago
Select Icelandair flight, departing Tue., 30 Apr. from Washington to London, returning Tue., 21 May, priced at AU$942 found 4 days ago
Flight from Washington to London route information
Origin airport
Washington Dulles Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Iberia, Icelandair, KLM, Lufthansa, Swiss International Air Lines, TAP Portugal, United, Virgin Atlantic
Return price
AU$825
Distance
5866 km
Average flight time
12 hours 21 mins

Your quick guide to flights from Washington to London

Pick up great flights from Washington to London

With Expedia, you have your pick of 27 flights a day with 20 airlines covering flights from Washington to London. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Washington to London that take around 17 hours.

Find cheap flights from Washington to London

From the great flight deals with prices currently ranging from AU$825 to AU$942, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Washington to London around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to London is normally in May.

Reasons to book your flight from Washington to London with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Washington to London across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to London right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Frequently asked questions

How much is a flight from Washington Dulles Intl. Airport (IAD) to Heathrow Airport (LHR)?
Start packing your suitcase, because round-trip journeys from IAD to London Heathrow start from AU$825. That’s based on airfares listed within the last 7 days on Expedia for flights departing within the next year. Prices can change quickly, so book today to nab the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Dulles Intl. Airport to Heathrow Airport?
We understand that things come up unexpectedly, so we’ve made it as easy as possible for you to cancel your trip online. Just head to the Customer Service Portal and follow the instructions.
How do I find cheap flights from Dulles Intl. Airport to Heathrow Airport (LHR) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for IAD to Heathrow Airport flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Dulles Intl. Airport to LHR?
You’ll have 5 900 kilometres to cover on the long-haul Chantilly to Hounslow route. Dress in layers of comfortable clothes and consider taking a sleep mask and earplugs.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Heathrow Airport?
With 60 flights a month from Dulles Intl. Airport to LHR, United Airlines (UA) is an excellent choice. Another carrier operating on this route is British Airways (BA). You’ll have 60 flights every month to choose from.
Are IAD to LHR flight tickets cheaper when they're purchased at the last minute?
Booking your trip from IAD to London Heathrow at the last minute could be your ticket to a great deal. However, it could end up costing a great deal more! If you’d prefer to err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to a year in advance. If your preferred carrier hasn’t released tickets yet, check back regularly as deals are updated on Expedia all the time.
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