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

View AU$812 flight on Tue, 26 Jan 2027Opens in a new window

Popular airlines 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
Fri, 9 Oct - Sun, 11 Oct
LHR
London
IAD
Washington
AU$927 Return, found 4 days ago
AU$927
Return
found 4 days ago
Select Icelandair flight, departing Fri, 9 Oct from London to Washington, returning Sun, 11 Oct, priced at AU$927 found 4 days ago
Delta
Mon, 20 July - Wed, 29 July
LHR
London
IAD
Washington
AU$996 Return, found 4 hours ago
AU$996
Return
found 4 hours ago
Select Delta flight, departing Mon, 20 July from London to Washington, returning Wed, 29 July, priced at AU$996 found 4 hours ago
Delta
Mon, 20 July - Wed, 29 July
LHR
London
IAD
Washington
AU$996 Return, found 4 hours ago
AU$996
Return
found 4 hours ago
Select Delta flight, departing Mon, 20 July from London to Washington, returning Wed, 29 July, priced at AU$996 found 4 hours ago
Virgin Atlantic
Mon, 20 July - Wed, 29 July
LHR
London
IAD
Washington
AU$1,010 Return, found 4 hours ago
AU$1,010
Return
found 4 hours ago
Select Virgin Atlantic flight, departing Mon, 20 July from London to Washington, returning Wed, 29 July, priced at AU$1,010 found 4 hours ago
Delta
Tue, 28 Apr - Tue, 5 May
LHR
London
IAD
Washington
AU$1,011 Return, found 6 days ago
AU$1,011
Return
found 6 days ago
Select Delta flight, departing Tue, 28 Apr from London to Washington, returning Tue, 5 May, priced at AU$1,011 found 6 days ago
Scandinavian Airlines
Fri, 9 Oct - Sun, 11 Oct
LHR
London
IAD
Washington
AU$1,042 Return, found 4 days ago
AU$1,042
Return
found 4 days ago
Select Scandinavian Airlines flight, departing Fri, 9 Oct from London to Washington, returning Sun, 11 Oct, priced at AU$1,042 found 4 days ago
KLM
Mon, 20 July - Wed, 29 July
LHR
London
IAD
Washington
AU$1,090 Return, found 4 hours ago
AU$1,090
Return
found 4 hours ago
Select KLM flight, departing Mon, 20 July from London to Washington, returning Wed, 29 July, priced at AU$1,090 found 4 hours ago
United
Tue, 6 Oct - Tue, 13 Oct
LHR
London
IAD
Washington
AU$1,092 Return, found 2 days ago
AU$1,092
Return
found 2 days ago
Select United flight, departing Tue, 6 Oct from London to Washington, returning Tue, 13 Oct, priced at AU$1,092 found 2 days ago
Iberia
Tue, 6 Oct - Tue, 13 Oct
LHR
London
IAD
Washington
AU$1,097 Return, found 2 days ago
AU$1,097
Return
found 2 days ago
Select Iberia flight, departing Tue, 6 Oct from London to Washington, returning Tue, 13 Oct, priced at AU$1,097 found 2 days ago
Air France
Mon, 27 Apr - Tue, 5 May
LHR
London
IAD
Washington
AU$1,106 Return, found 6 days ago
AU$1,106
Return
found 6 days ago
Select Air France flight, departing Mon, 27 Apr from London to Washington, returning Tue, 5 May, priced at AU$1,106 found 6 days ago

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$927. 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.

Travel information

Origin airport
Heathrow
Destination airport
Washington Dulles Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, TAP Portugal, United, Virgin Atlantic, avianca
Return price
AU$926
Distance
5866 km
Average flight time
3 hours 11 mins

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