Cheapest return flights from Seattle to London in January from 446€

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

Return flights

30 Jan - 02 Feb Icelandair
21 Jan - 27 Jan Lufthansa
21 Jan - 28 Jan Icelandair
20 Jan - 10 Feb Icelandair
20 Jan - 26 Feb Icelandair
29 Jan - 05 Feb Icelandair
20 Jan - 27 Jan Icelandair
19 Jan - 04 Feb Icelandair
25 Jan - 01 Feb Icelandair
29 Jan - 02 Feb Icelandair
29 Jan - 08 Feb Icelandair
18 Jan - 04 Feb Icelandair
23 Jan - 27 Jan Icelandair
29 Jan - 06 Feb Icelandair
21 Jan - 26 Jan Turkish Airlines
17 Jan - 19 Jan Turkish Airlines

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

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