Cheapest one-way flights from Seattle to London in October from 281€

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

One-Way flights

30 Oct Frontier Airlines
25 Oct Alaska Airlines
21 Oct WestJet
24 Oct WestJet
23 Oct WestJet
17 Oct jetBlue
31 Oct WestJet
31 Oct British Airways direct
21 Oct Air France direct
25 Oct Air France direct

Also check the deals for return flights from Seattle to London in October.

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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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