Cheapest return flights from Seattle to London in October from 402€
AirHint found the following cheapest return flights from Seattle (SEA) to London (LHR)
in October 2025 (see full year ).
Return flights
20 Oct
- 29 Oct
Icelandair
402 €
16 Oct
- 23 Oct
Icelandair
445 €
28 Oct
- 05 Nov
Lufthansa
454 €
01 Oct
- 21 Oct
Delta
460 €
01 Oct
- 14 Oct
Delta
460 €
20 Oct
- 29 Oct
British Airways
461 €
direct
21 Oct
- 28 Oct
British Airways
462 €
direct
01 Oct
- 08 Oct
British Airways
462 €
direct
07 Oct
- 14 Oct
Air France
466 €
direct
01 Oct
- 14 Oct
British Airways
466 €
direct
15 Oct
- 24 Oct
British Airways
466 €
direct
27 Oct
- 04 Nov
Air France
466 €
direct
28 Oct
- 05 Nov
British Airways
466 €
direct
24 Oct
- 03 Nov
Icelandair
473 €
22 Oct
- 03 Nov
Aer Lingus
490 €
30 Oct
- 11 Nov
Delta
502 €
26 Oct
- 02 Nov
British Airways
504 €
direct
31 Oct
- 07 Nov
British Airways
504 €
direct
28 Oct
- 03 Nov
Delta
508 €
direct
22 Oct
- 03 Nov
Air France
509 €
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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