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

View AU$357 flight on Tue, 16 Sep. 2025Opens in a new window

Popular airlines from Washington to London

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

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.

Scandinavian Airlines
Fri, 24 Oct. - Thu, 30 Oct.
IAD
Washington
LHR
London
AU$844 Return, found 6 days ago
AU$844
Return
found 6 days ago
Select Scandinavian Airlines flight, departing Fri, 24 Oct. from Washington to London, returning Thu, 30 Oct., priced at AU$844 found 6 days ago
TAP Portugal
Mon, 8 Sep. - Tue, 16 Sep.
IAD
Washington
LHR
London
AU$877 Return, found 1 day ago
AU$877
Return
found 1 day ago
Select TAP Portugal flight, departing Mon, 8 Sep. from Washington to London, returning Tue, 16 Sep., priced at AU$877 found 1 day ago
Icelandair
Thu, 16 Oct. - Sun, 26 Oct.
IAD
Washington
LHR
London
AU$921 Return, found 1 day ago
AU$921
Return
found 1 day ago
Select Icelandair flight, departing Thu, 16 Oct. from Washington to London, returning Sun, 26 Oct., priced at AU$921 found 1 day ago
Aer Lingus
Mon, 8 Sep. - Tue, 16 Sep.
IAD
Washington
LHR
London
AU$925 Return, found 1 day ago
AU$925
Return
found 1 day ago
Select Aer Lingus flight, departing Mon, 8 Sep. from Washington to London, returning Tue, 16 Sep., priced at AU$925 found 1 day ago
Icelandair
Sun, 14 Sep. - Tue, 23 Sep.
IAD
Washington
LGW
London
AU$935 Return, found 2 hours ago
AU$935
Return
found 2 hours ago
Select Icelandair flight, departing Sun, 14 Sep. from Washington to London, returning Tue, 23 Sep., priced at AU$935 found 2 hours ago
Icelandair
Thu, 16 Oct. - Mon, 27 Oct.
BWI
Baltimore
LGW
London
AU$959 Return, found 4 days ago
AU$959
Return
found 4 days ago
Select Icelandair flight, departing Thu, 16 Oct. from Baltimore to London, returning Mon, 27 Oct., priced at AU$959 found 4 days ago
United
Sun, 7 Sep. - Tue, 16 Sep.
BWI
Baltimore
LHR
London
AU$964 Return, found 5 days ago
AU$964
Return
found 5 days ago
Select United flight, departing Sun, 7 Sep. from Baltimore to London, returning Tue, 16 Sep., priced at AU$964 found 5 days ago
Virgin Atlantic
Mon, 13 Oct. - Wed, 29 Oct.
IAD
Washington
LHR
London
AU$971 Return, found 1 day ago
AU$971
Return
found 1 day ago
Select Virgin Atlantic flight, departing Mon, 13 Oct. from Washington to London, returning Wed, 29 Oct., priced at AU$971 found 1 day ago
Virgin Atlantic
Sun, 12 Oct. - Thu, 23 Oct.
IAD
Washington
LHR
London
AU$983 Return, found 1 day ago
AU$983
Return
found 1 day ago
Select Virgin Atlantic flight, departing Sun, 12 Oct. from Washington to London, returning Thu, 23 Oct., priced at AU$983 found 1 day ago
United
Sun, 7 Sep. - Tue, 16 Sep.
DCA
Washington
LHR
London
AU$984 Return, found 5 days ago
AU$984
Return
found 5 days ago
Select United flight, departing Sun, 7 Sep. from Washington to London, returning Tue, 16 Sep., priced at AU$984 found 5 days ago

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

February is typically the cheapest month to fly

From AU$515 - AU$1,055 per traveller.

Graph displaying average flight prices per month

Flight from Washington to London route information
Origin airport
Washington Dulles Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, 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$844
Distance
5866 km

WAS to LON Flights

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London Flight Deals

London

Washington to Heathrow
AU$843.78
Washington Airports

Washington

Washington Dulles Intl. to London
AU$843.78
Ronald Reagan Washington National to London
AU$983.50

Baltimore

*Available to Expedia members.