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

Airlines that fly from Heathrow Airport (LHR) to Washington Dulles International Airport (IAD)

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

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

Icelandair
Tue., 18 Mar. - Mon., 24 Mar.
LHR
London
IAD
Washington
AU$890 Return, found 9 hours ago
AU$890
Return
found 9 hours ago
Select Icelandair flight, departing Tue., 18 Mar. from London to Washington, returning Mon., 24 Mar., priced at AU$890 found 9 hours ago
United
Mon., 13 Jan. - Mon., 20 Jan.
LHR
London
IAD
Washington
AU$985 Return, found 4 days ago
AU$985
Return
found 4 days ago
Select United flight, departing Mon., 13 Jan. from London to Washington, returning Mon., 20 Jan., priced at AU$985 found 4 days ago
Delta
Tue., 18 Mar. - Mon., 24 Mar.
LHR
London
IAD
Washington
AU$995 Return, found 9 hours ago
AU$995
Return
found 9 hours ago
Select Delta flight, departing Tue., 18 Mar. from London to Washington, returning Mon., 24 Mar., priced at AU$995 found 9 hours ago
Virgin Atlantic
Tue., 18 Mar. - Mon., 24 Mar.
LHR
London
IAD
Washington
AU$1,000 Return, found 9 hours ago
AU$1,000
Return
found 9 hours ago
Select Virgin Atlantic flight, departing Tue., 18 Mar. from London to Washington, returning Mon., 24 Mar., priced at AU$1,000 found 9 hours ago
Lufthansa
Mon., 13 Jan. - Mon., 20 Jan.
LHR
London
IAD
Washington
AU$1,015 Return, found 4 days ago
AU$1,015
Return
found 4 days ago
Select Lufthansa flight, departing Mon., 13 Jan. from London to Washington, returning Mon., 20 Jan., priced at AU$1,015 found 4 days ago
Scandinavian Airlines
Thu., 13 Feb. - Mon., 24 Feb.
LHR
London
IAD
Washington
AU$1,038 Return, found 3 days ago
AU$1,038
Return
found 3 days ago
Select Scandinavian Airlines flight, departing Thu., 13 Feb. from London to Washington, returning Mon., 24 Feb., priced at AU$1,038 found 3 days ago
Swiss International Air Lines
Mon., 27 Jan. - Mon., 3 Feb.
LHR
London
IAD
Washington
AU$1,042 Return, found 16 hours ago
AU$1,042
Return
found 16 hours ago
Select Swiss International Air Lines flight, departing Mon., 27 Jan. from London to Washington, returning Mon., 3 Feb., priced at AU$1,042 found 16 hours ago
American Airlines
Mon., 13 Jan. - Mon., 20 Jan.
LHR
London
IAD
Washington
AU$1,043 Return, found 4 days ago
AU$1,043
Return
found 4 days ago
Select American Airlines flight, departing Mon., 13 Jan. from London to Washington, returning Mon., 20 Jan., priced at AU$1,043 found 4 days ago
Austrian Airlines
Tue., 18 Mar. - Mon., 24 Mar.
LHR
London
IAD
Washington
AU$1,044 Return, found 9 hours ago
AU$1,044
Return
found 9 hours ago
Select Austrian Airlines flight, departing Tue., 18 Mar. from London to Washington, returning Mon., 24 Mar., priced at AU$1,044 found 9 hours ago
TAP Portugal
Wed., 19 Feb. - Sat., 22 Feb.
LHR
London
IAD
Washington
AU$1,061 Return, found 19 hours ago
AU$1,061
Return
found 19 hours ago
Select TAP Portugal flight, departing Wed., 19 Feb. from London to Washington, returning Sat., 22 Feb., priced at AU$1,061 found 19 hours ago
Flight from London to Washington route information
Origin airport
Heathrow
Destination airport
Washington Dulles Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Return price
AU$890
Distance
5866 km

Your quick guide to flights from London to Washington

Pick up great flights from London to Washington

With Expedia, you have your pick of 26 flights a day with 20 airlines covering flights from London to Washington. 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 London to Washington that take around 8 hours.

Find cheap flights from London to Washington

From the great flight deals with prices currently ranging from AU$890 to AU$1,061, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from London to Washington 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 Washington is normally in March.

Reasons to book your flight from London to Washington 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 London to Washington 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 Washington 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 Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip journey between London Heathrow and Dulles Intl. Airport was AU$890. Fares this cheap don’t wait forever, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from LHR to Dulles Intl. Airport?
This can differ from airline to airline, as each has its own terms and conditions. Visit the Customer Service Portal, where you’ll find easy instructions on how to cancel your flight online.
How do I find cheap flights from London Heathrow to IAD 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 Heathrow Airport to Dulles Intl. Airport flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Heathrow Airport (LHR) to Dulles Intl. Airport?
With around 5 900 kilometres separating Heathrow Airport and IAD, your flight will be a long one. Pack wisely to make your time on board comfortable. Simple things like warm clothes and some noise-cancelling headphones can make the biggest difference.
Which airlines fly direct from LHR to Dulles Intl. Airport?
United Airlines (UA) is a popular choice. It offers 60 flights between LHR and Washington Dulles Intl. Airport (IAD) each month. You could also have a look at the airfares with British Airways (BA). This airline operates 60 flights every month between Hounslow and Chantilly.
Are London Heathrow to IAD flight tickets cheaper when they're purchased at the last minute?
Flight prices fluctuate, so not always. While last-minute deals between LHR and Washington Dulles Intl. Airport (IAD) are of course possible, it’s also a good idea to keep a close eye on prices well before you fly. In fact, some air carriers publish their prices up to a year ahead of the departure date. Expedia is constantly updating the best bargains around, so check back often and be ready to grab your seat when fare prices drop.
Washington Flight Deals

Baltimore

London to Baltimore Washington Intl. Thurgood Marshall
AU$842.00

Washington

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London

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