£537 Cheap Icelandair flights from London to Washington (LHR→IAD)

View £537 flight on Mon, 8 Dec 2025Opens in a new window

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Icelandair flights from London to Washington (LHR→IAD)

Prices were available within the past 7 days and start at £537 for one-way flights and £392 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Thu, 8 Jan - Mon, 12 Jan
LHR
London
IAD
Washington
£392 Return, found 4 days ago
£392
Return
found 4 days ago
Select Icelandair flight, departing Thu, 8 Jan from London to Washington, returning Mon, 12 Jan, priced at £392 found 4 days ago
Icelandair
Tue, 28 Oct - Tue, 18 Nov
LHR
London
IAD
Washington
£393 Return, found 4 days ago
£393
Return
found 4 days ago
Select Icelandair flight, departing Tue, 28 Oct from London to Washington, returning Tue, 18 Nov, priced at £393 found 4 days ago
Icelandair
Wed, 24 Sep - Sun, 5 Oct
LHR
London
IAD
Washington
£415 Return, found 4 days ago
£415
Return
found 4 days ago
Select Icelandair flight, departing Wed, 24 Sep from London to Washington, returning Sun, 5 Oct, priced at £415 found 4 days ago
Icelandair
Mon, 29 Sep - Mon, 6 Oct
LHR
London
IAD
Washington
£417 Return, found 22 hours ago
£417
Return
found 22 hours ago
Select Icelandair flight, departing Mon, 29 Sep from London to Washington, returning Mon, 6 Oct, priced at £417 found 22 hours ago
Icelandair
Wed, 17 Sep - Sun, 28 Sep
LHR
London
IAD
Washington
£421 Return, found 4 hours ago
£421
Return
found 4 hours ago
Select Icelandair flight, departing Wed, 17 Sep from London to Washington, returning Sun, 28 Sep, priced at £421 found 4 hours ago
Icelandair
Wed, 12 Nov - Thu, 20 Nov
LHR
London
IAD
Washington
£421 Return, found 1 day ago
£421
Return
found 1 day ago
Select Icelandair flight, departing Wed, 12 Nov from London to Washington, returning Thu, 20 Nov, priced at £421 found 1 day ago
Icelandair
Tue, 26 Aug - Tue, 2 Sep
LHR
London
IAD
Washington
£423 Return, found 4 hours ago
£423
Return
found 4 hours ago
Select Icelandair flight, departing Tue, 26 Aug from London to Washington, returning Tue, 2 Sep, priced at £423 found 4 hours ago
Icelandair
Fri, 3 Oct - Wed, 8 Oct
LHR
London
IAD
Washington
£430 Return, found 1 day ago
£430
Return
found 1 day ago
Select Icelandair flight, departing Fri, 3 Oct from London to Washington, returning Wed, 8 Oct, priced at £430 found 1 day 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, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Popular airline
British Airways
Distance
5866 km
Average flight time
3 hours 15 mins
*Available to Expedia members.