Cheapest one-way flights from Seattle to London in February from $454

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

One-Way flights

28 Feb Alaska Airlines

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

Skyscanner

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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