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 to Washington (LHR-IAD)

Prices were available within the past 7 days and start at AU$1,011 for one-way flights and AU$890 for return, for the period specified. Prices and availability are subject to change. Additional terms apply.
Icelandair
London — Washington
LHR - IAD with Icelandair
Tue, 18 Mar
Icelandair
Washington — London
IAD - LHR with Icelandair
Mon, 24 Mar
Found 16 hours ago
From AU$890
Select flight from London to Washington, departing on March 18 with Icelandair, and returning from Washington to London on March 24 with Icelandair. Price from AU$890, Found 16 hours ago.
United
London — Washington
LHR - IAD with United
Mon, 13 Jan
United
Washington — London
IAD - LHR with United
Mon, 20 Jan
Found 4 days ago
From AU$985
Select flight from London to Washington, departing on January 13 with United, and returning from Washington to London on January 20 with United. Price from AU$985, Found 4 days ago.
Delta
London — Washington
LHR - IAD with Delta
Tue, 18 Mar
Delta
Washington — London
IAD - LHR with Delta
Mon, 24 Mar
Found 16 hours ago
From AU$995
Select flight from London to Washington, departing on March 18 with Delta, and returning from Washington to London on March 24 with Delta. Price from AU$995, Found 16 hours ago.
Virgin Atlantic
London — Washington
LHR - IAD with Virgin Atlantic
Tue, 18 Mar
Virgin Atlantic
Washington — London
IAD - LHR with Virgin Atlantic
Mon, 24 Mar
Found 16 hours ago
From AU$1,000
Select flight from London to Washington, departing on March 18 with Virgin Atlantic, and returning from Washington to London on March 24 with Virgin Atlantic. Price from AU$1,000, Found 16 hours ago.
Lufthansa
London — Washington
LHR - IAD with Lufthansa
Mon, 13 Jan
Lufthansa
Washington — London
IAD - LHR with Lufthansa
Mon, 20 Jan
Found 4 days ago
From AU$1,015
Select flight from London to Washington, departing on January 13 with Lufthansa, and returning from Washington to London on January 20 with Lufthansa. Price from AU$1,015, Found 4 days ago.
Scandinavian Airlines
London — Washington
LHR - IAD with Scandinavian Airlines
Thu, 13 Feb
Scandinavian Airlines
Washington — London
IAD - LHR with Scandinavian Airlines
Mon, 24 Feb
Found 3 days ago
From AU$1,038
Select flight from London to Washington, departing on February 13 with Scandinavian Airlines, and returning from Washington to London on February 24 with Scandinavian Airlines. Price from AU$1,038, Found 3 days ago.
Swiss International Air Lines
London — Washington
LHR - IAD with Swiss International Air Lines
Mon, 27 Jan
Swiss International Air Lines
Washington — London
IAD - LHR with Swiss International Air Lines
Mon, 3 Feb
Found 23 hours ago
From AU$1,042
Select flight from London to Washington, departing on January 27 with Swiss International Air Lines, and returning from Washington to London on February 3 with Swiss International Air Lines. Price from AU$1,042, Found 23 hours ago.
American Airlines
London — Washington
LHR - IAD with American Airlines
Mon, 13 Jan
American Airlines
Washington — London
IAD - LHR with American Airlines
Mon, 20 Jan
Found 4 days ago
From AU$1,043
Select flight from London to Washington, departing on January 13 with American Airlines, and returning from Washington to London on January 20 with American Airlines. Price from AU$1,043, Found 4 days ago.
Austrian Airlines
London — Washington
LHR - IAD with Austrian Airlines
Tue, 18 Mar
Austrian Airlines
Washington — London
IAD - LHR with Austrian Airlines
Mon, 24 Mar
Found 16 hours ago
From AU$1,044
Select flight from London to Washington, departing on March 18 with Austrian Airlines, and returning from Washington to London on March 24 with Austrian Airlines. Price from AU$1,044, Found 16 hours ago.
TAP Portugal
London — Washington
LHR - IAD with TAP Portugal
Wed, 19 Feb
TAP Portugal
Washington — London
IAD - LHR with TAP Portugal
Sat, 22 Feb
Found 1 day ago
From AU$1,061
Select flight from London to Washington, departing on February 19 with TAP Portugal, and returning from Washington to London on February 22 with TAP Portugal. Price from AU$1,061, Found 1 day ago.
TAP Portugal
London — Washington
LHR - IAD with TAP Portugal
Mon, 20 Jan
Found 6 days ago
From AU$1,011
Select flight from London to Washington, departing on with TAP Portugal. Price from AU$1,011, Found 6 days ago.
Icelandair
London — Washington
LHR - IAD with Icelandair
Wed, 19 Feb
Found 5 days ago
From AU$1,061
Select flight from London to Washington, departing on with Icelandair. Price from AU$1,061, Found 5 days ago.
Royal Air Maroc
London — Washington
LHR - IAD with Royal Air Maroc
Tue, 18 Mar
Found 16 hours ago
From AU$1,092
Select flight from London to Washington, departing on with Royal Air Maroc. Price from AU$1,092, Found 16 hours ago.
WestJet
London — Washington
LHR - IAD with WestJet
Tue, 27 May
Found 4 hours ago
From AU$1,176
Select flight from London to Washington, departing on with WestJet. Price from AU$1,176, Found 4 hours ago.
avianca
London — Washington
LHR - IAD with avianca
Mon, 24 Mar
Just found
From AU$1,193
Select flight from London to Washington, departing on with avianca. Price from AU$1,193, Just found.
Aer Lingus
London — Washington
LHR - IAD with Aer Lingus
Tue, 28 Jan
Found 5 days ago
From AU$1,309
Select flight from London to Washington, departing on with Aer Lingus. Price from AU$1,309, Found 5 days ago.
Turkish Airlines
London — Washington
LHR - IAD with Turkish Airlines
Wed, 19 Feb
Found 5 days ago
From AU$1,424
Select flight from London to Washington, departing on with Turkish Airlines. Price from AU$1,424, Found 5 days ago.
American Airlines
London — Washington
LHR - IAD with American Airlines
Wed, 10 Sep
Found 6 days ago
From AU$2,250
Select flight from London to Washington, departing on with American Airlines. Price from AU$2,250, Found 6 days ago.
Delta
London — Washington
LHR - IAD with Delta
Wed, 19 Feb
Found 5 days ago
From AU$2,258
Select flight from London to Washington, departing on with Delta. Price from AU$2,258, Found 5 days ago.
Virgin Atlantic
London — Washington
LHR - IAD with Virgin Atlantic
Wed, 19 Feb
Found 5 days ago
From AU$2,266
Select flight from London to Washington, departing on with Virgin Atlantic. Price from AU$2,266, Found 5 days 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

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London to Baltimore Washington Intl. Thurgood Marshall
AU$820.70

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London

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