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
31 Jan - 08 Feb Icelandair
06 Jan - 16 Jan Icelandair
23 Jan - 26 Jan Icelandair
07 Jan - 31 Jan Icelandair
06 Jan - 31 Jan Icelandair
19 Jan - 24 Jan Icelandair
12 Jan - 19 Jan Icelandair
07 Jan - 14 Jan Icelandair
10 Jan - 17 Jan Icelandair
13 Jan - 20 Jan Icelandair
25 Jan - 01 Feb Icelandair
28 Jan - 04 Feb Icelandair
31 Jan - 07 Feb Icelandair
13 Jan - 07 Feb Icelandair
28 Jan - 04 Feb British Airways direct
27 Jan - 21 Feb Air France direct
13 Jan - 07 Feb British Airways direct
07 Jan - 15 Feb Air France direct
31 Jan - 07 Feb British Airways direct

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

Powered by

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.

Book a cheap hotel in London

Cheap car rent in London

Feel free to contact us with any feedback or request another flight research.