Cheapest return flights from Seattle to London in January from 453€

AirHint found the following cheapest return flights from Seattle (SEA) to London (STN) in January 2026 (see full year).

Return flights

28 Jan - 05 Feb Icelandair
14 Jan - 20 Jan Lufthansa
17 Jan - 25 Jan Icelandair
29 Jan - 06 Feb Icelandair
10 Jan - 17 Jan Icelandair
12 Jan - 18 Jan Icelandair
22 Jan - 04 Feb Icelandair
24 Jan - 29 Jan Icelandair
07 Jan - 14 Jan Icelandair
19 Jan - 24 Jan Icelandair
16 Jan - 23 Jan Lufthansa
20 Jan - 25 Jan Icelandair
08 Jan - 15 Jan Turkish Airlines
22 Jan - 08 Feb Turkish Airlines
31 Jan - 08 Feb Lufthansa
16 Jan - 22 Feb Lufthansa

Also check the deals for one-way flights from Seattle to London in January.

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