Cheapest one-way flights from Seattle to London in October from 142€

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

One-Way flights

12 Oct Icelandair
08 Oct Icelandair
07 Oct Icelandair
02 Oct Icelandair
09 Oct Icelandair
26 Oct Icelandair
08 Oct Air France direct
12 Oct Air France direct
26 Oct Air France direct
07 Oct Air France direct

Also check the deals for return 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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