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Swiss International Air Lines Cheap Flights from Washington to London

View €299 flight on Sun, 17 Jan 2027Opens in a new window

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Prices were available within the past 7 days and start at €299 for one-way flights and €753 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Tue, 6 Oct - Tue, 13 Oct
IAD
Washington
LHR
London
€753 Return, found 12 hours ago
€753
Return
found 12 hours ago
Select Swiss International Air Lines flight, departing Tue, 6 Oct from Washington to London, returning Tue, 13 Oct, priced at €753 found 12 hours ago
Swiss International Air Lines
Mon, 24 Aug - Wed, 9 Sept
IAD
Washington
LGW
London
€816 Return, found 5 days ago
€816
Return
found 5 days ago
Select Swiss International Air Lines flight, departing Mon, 24 Aug from Washington to London, returning Wed, 9 Sept, priced at €816 found 5 days ago
Swiss International Air Lines
Thu, 1 Oct - Tue, 6 Oct
IAD
Washington
LCY
London
€918 Return, found 1 day ago
€918
Return
found 1 day ago
Select Swiss International Air Lines flight, departing Thu, 1 Oct from Washington to London, returning Tue, 6 Oct, priced at €918 found 1 day ago
Swiss International Air Lines
Mon, 3 Aug - Fri, 7 Aug
IAD
Washington
LCY
London
€1,625 Return, found 3 days ago
€1,625
Return
found 3 days ago
Select Swiss International Air Lines flight, departing Mon, 3 Aug from Washington to London, returning Fri, 7 Aug, priced at €1,625 found 3 days ago
Swiss International Air Lines
Mon, 3 Aug - Fri, 7 Aug
IAD
Washington
LCY
London
€1,630 Return, found 3 days ago
€1,630
Return
found 3 days ago
Select Swiss International Air Lines flight, departing Mon, 3 Aug from Washington to London, returning Fri, 7 Aug, priced at €1,630 found 3 days ago

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

May is typically the cheapest month to fly

From €404 - €728 per traveller.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Gatwick
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Popular airline
British Airways
Distance
5896 km
*Available to Expedia members.