AirHint found the following cheapest return flights from Seattle (SEA) to London (LGW)
in January 2025 (see full year ).
Return flights
20 Jan
- 04 Feb
Frontier Airlines
555 €
19 Jan
- 04 Feb
Spirit Airlines
563 €
13 Jan
- 16 Jan
Frontier Airlines
564 €
14 Jan
- 21 Jan
Spirit Airlines
573 €
13 Jan
- 19 Feb
Frontier Airlines
584 €
30 Jan
- 07 Feb
Icelandair
592 €
13 Jan
- 20 Jan
Frontier Airlines
612 €
30 Jan
- 04 Feb
Spirit Airlines
616 €
28 Jan
- 09 Feb
Spirit Airlines
616 €
31 Jan
- 07 Feb
Icelandair
617 €
25 Jan
- 01 Feb
Icelandair
617 €
24 Jan
- 03 Feb
Icelandair
652 €
23 Jan
- 02 Feb
Icelandair
654 €
09 Jan
- 16 Jan
Alaska Airlines
700 €
17 Jan
- 21 Jan
Turkish Airlines
717 €
11 Jan
- 17 Jan
Alaska Airlines
729 €
19 Jan
- 26 Jan
Turkish Airlines
748 €
06 Jan
- 19 Jan
Spirit Airlines
749 €
09 Jan
- 13 Jan
Frontier Airlines
761 €
17 Jan
- 24 Jan
Turkish Airlines
762 €
Also check the deals for one-way flights from Seattle to London in January .
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.