Cheapest return flights from Seattle to London in October from 407€

AirHint found the following cheapest return flights from Seattle (SEA) to London (LHR) in October 2025 (see full year).

Return flights

29 Oct - 05 Nov Aer Lingus
15 Oct - 12 Nov Aer Lingus
01 Oct - 08 Oct Aer Lingus
01 Oct - 15 Oct Aer Lingus
15 Oct - 22 Oct Aer Lingus
07 Oct - 21 Oct Aer Lingus
05 Oct - 21 Oct Aer Lingus
01 Oct - 21 Oct Delta
15 Oct - 30 Oct Air France
14 Oct - 28 Oct Lufthansa
07 Oct - 21 Oct British Airways direct
01 Oct - 08 Oct British Airways direct
15 Oct - 12 Nov British Airways direct
28 Oct - 04 Nov British Airways direct
29 Oct - 05 Nov Virgin Atlantic direct
20 Oct - 03 Nov Aer Lingus
27 Oct - 02 Nov Aer Lingus
26 Oct - 02 Nov Aer Lingus
27 Oct - 03 Nov Aer Lingus
20 Oct - 03 Nov Virgin Atlantic direct

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

Skyscanner

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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