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

View AU$714 flight on Wed, 17 Sep. 2025Opens in a new window

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

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.

Aer Lingus
Fri, 7 Nov. - Wed, 12 Nov.
LHR
London
IAD
Washington
AU$824 Return, found 3 days ago
AU$824
Return
found 3 days ago
Select Aer Lingus flight, departing Fri, 7 Nov. from London to Washington, returning Wed, 12 Nov., priced at AU$824 found 3 days ago
Icelandair
Sun, 14 Sep. - Tue, 30 Sep.
LGW
London
IAD
Washington
AU$848 Return, found 1 day ago
AU$848
Return
found 1 day ago
Select Icelandair flight, departing Sun, 14 Sep. from London to Washington, returning Tue, 30 Sep., priced at AU$848 found 1 day ago
TAP Portugal
Wed, 24 Sep. - Tue, 30 Sep.
LGW
London
IAD
Washington
AU$865 Return, found 3 days ago
AU$865
Return
found 3 days ago
Select TAP Portugal flight, departing Wed, 24 Sep. from London to Washington, returning Tue, 30 Sep., priced at AU$865 found 3 days ago
Icelandair
Thu, 2 Oct. - Tue, 7 Oct.
LGW
London
BWI
Baltimore
AU$904 Return, found 10 hours ago
AU$904
Return
found 10 hours ago
Select Icelandair flight, departing Thu, 2 Oct. from London to Baltimore, returning Tue, 7 Oct., priced at AU$904 found 10 hours ago
Icelandair
Fri, 5 Dec. - Mon, 8 Dec.
LHR
London
BWI
Baltimore
AU$927 Return, found 5 days ago
AU$927
Return
found 5 days ago
Select Icelandair flight, departing Fri, 5 Dec. from London to Baltimore, returning Mon, 8 Dec., priced at AU$927 found 5 days ago
Scandinavian Airlines
Sat, 20 Sep. - Thu, 25 Sep.
LHR
London
IAD
Washington
AU$977 Return, found 20 hours ago
AU$977
Return
found 20 hours ago
Select Scandinavian Airlines flight, departing Sat, 20 Sep. from London to Washington, returning Thu, 25 Sep., priced at AU$977 found 20 hours ago
American Airlines
Thu, 18 Sep. - Sat, 27 Sep.
LGW
London
DCA
Washington
AU$984 Return, found 5 days ago
AU$984
Return
found 5 days ago
Select American Airlines flight, departing Thu, 18 Sep. from London to Washington, returning Sat, 27 Sep., priced at AU$984 found 5 days ago
Air Canada
Sat, 13 Sep. - Sat, 20 Sep.
LHR
London
DCA
Washington
AU$1,006 Return, found 6 days ago
AU$1,006
Return
found 6 days ago
Select Air Canada flight, departing Sat, 13 Sep. from London to Washington, returning Sat, 20 Sep., priced at AU$1,006 found 6 days ago
Virgin Atlantic
Thu, 9 Oct. - Thu, 16 Oct.
LHR
London
IAD
Washington
AU$1,013 Return, found 5 days ago
AU$1,013
Return
found 5 days ago
Select Virgin Atlantic flight, departing Thu, 9 Oct. from London to Washington, returning Thu, 16 Oct., priced at AU$1,013 found 5 days ago
Delta
Fri, 7 Nov. - Wed, 12 Nov.
LHR
London
IAD
Washington
AU$1,017 Return, found 3 days ago
AU$1,017
Return
found 3 days ago
Select Delta flight, departing Fri, 7 Nov. from London to Washington, returning Wed, 12 Nov., priced at AU$1,017 found 3 days ago

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

March is typically the cheapest month to fly

From AU$557 - AU$1,053 per traveller.

Graph displaying average flight prices per month

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, ITA Airways, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Return price
AU$824
Distance
5866 km

LON to WAS Flights

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Washington Flight Deals

Washington

London to Washington Dulles Intl.
AU$823.50

Baltimore

London Airports

London

Heathrow to Washington
AU$823.50
*Available to Expedia members.