Cheapest return flights from Seattle to London in October from 583€

AirHint found the following cheapest return flights from Seattle (SEA) to London (LHR) in October 2026 (see full year).

Return flights

08 Oct - 22 Oct Air Canada
11 Oct - 25 Oct Lufthansa
08 Oct - 22 Oct British Airways direct
11 Oct - 25 Oct British Airways direct

Also check the deals for one-way 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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