Cheapest return flights from Seattle to London in January from 408€
AirHint found the following cheapest return flights from Seattle (SEA) to London (LHR)
in January 2026 (see full year ).
Return flights
11 Jan
- 31 Jan
Icelandair
408 €
31 Jan
- 08 Feb
Icelandair
421 €
06 Jan
- 16 Jan
Icelandair
445 €
23 Jan
- 26 Jan
Icelandair
445 €
07 Jan
- 31 Jan
Icelandair
445 €
06 Jan
- 31 Jan
Icelandair
445 €
19 Jan
- 24 Jan
Icelandair
445 €
12 Jan
- 19 Jan
Icelandair
446 €
07 Jan
- 14 Jan
Icelandair
446 €
10 Jan
- 17 Jan
Icelandair
446 €
13 Jan
- 20 Jan
Icelandair
446 €
25 Jan
- 01 Feb
Icelandair
446 €
28 Jan
- 04 Feb
Icelandair
446 €
31 Jan
- 07 Feb
Icelandair
446 €
13 Jan
- 07 Feb
Icelandair
448 €
28 Jan
- 04 Feb
British Airways
508 €
direct
27 Jan
- 21 Feb
Air France
529 €
direct
13 Jan
- 07 Feb
British Airways
532 €
direct
07 Jan
- 15 Feb
Air France
532 €
direct
31 Jan
- 07 Feb
British Airways
551 €
direct
Also check the deals for one-way flights from Seattle to London in January .
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