Cheapest return flights from Seattle to London in October from 396€
AirHint found the following cheapest return flights from Seattle (SEA) to London (LHR)
in October 2025 (see full year ).
Return flights
08 Oct
- 21 Oct
Aer Lingus
396 €
07 Oct
- 15 Oct
Air Canada
396 €
08 Oct
- 21 Oct
Virgin Atlantic
404 €
direct
08 Oct
- 29 Oct
Aer Lingus
408 €
08 Oct
- 22 Oct
Aer Lingus
410 €
16 Oct
- 27 Oct
Icelandair
411 €
03 Oct
- 11 Oct
Icelandair
412 €
24 Oct
- 03 Nov
Icelandair
412 €
15 Oct
- 22 Oct
British Airways
437 €
direct
21 Oct
- 28 Oct
British Airways
437 €
direct
29 Oct
- 05 Nov
British Airways
437 €
direct
01 Oct
- 15 Oct
British Airways
438 €
direct
24 Oct
- 05 Nov
Icelandair
445 €
10 Oct
- 05 Nov
Aer Lingus
451 €
30 Oct
- 13 Nov
Delta
477 €
10 Oct
- 05 Nov
British Airways
479 €
direct
30 Oct
- 13 Nov
British Airways
483 €
direct
24 Oct
- 05 Nov
British Airways
483 €
direct
23 Oct
- 10 Nov
Delta
488 €
24 Oct
- 03 Nov
Delta
524 €
direct
Also check the deals for one-way flights from Seattle to London in October .
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.
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