Cheapest one-way flights from Seattle to London in February from $240

AirHint found the following cheapest one-way flights from Seattle (SEA) to London (LGW) in February 2026 (see full year).

One-Way flights

03 Feb Alaska Airlines
15 Feb Hawaiian Airlines
07 Feb Icelandair
22 Feb Frontier Airlines
02 Feb Icelandair
17 Feb Icelandair
14 Feb Frontier Airlines
28 Feb Icelandair
27 Feb Alaska Airlines
19 Feb Alaska Airlines

Also check the deals for return flights from Seattle to London in February.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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