The Houses of Parliament and Big Ben in London, with a red double-decker bus crossing the Lambeth Bridge.

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S$423 Cheap Air Canada flights Seattle (SEA) to London (LON)

Prices were available within the past 7 days and start at S$423 for one-way flights and S$1,032 for return, for the period specified. Prices and availability are subject to change.

All deals

One way

Return

Sun, 14 Mar - Mon, 22 Mar

SEA

Seattle

LHR

London

S$1,032

Return

Found 3 days ago

Sun, 14 Mar - Mon, 22 Mar

SEA

Seattle

LHR

London

S$1,229

Return

Found 3 days ago

Find the cheapest month to fly from Seattle (SEA) to London (LON)

February is typically the cheapest month to fly

From S$814 - S$1,104 per traveller.

Travel information

Origin airport	Seattle-Tacoma International Airport
Destination airport	London
Distance	7,742 km away
Airline name	Air Canada
Airline code	AC
Return price	S$1,032

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Air Canada flights to London from Seattle

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S$423 Cheap Air Canada flights Seattle (SEA) to London (LON)

Find the cheapest month to fly from Seattle (SEA) to London (LON)

February is typically the cheapest month to flyFebruary is typically the cheapest month to fly

Travel information

Explore a world of travel with Expedia

February is typically the cheapest month to fly