Cheapest return flights from Seattle to London in June from 778€

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

Return flights

16 Jun - 29 Jul Air France direct
08 Jun - 22 Jun WestJet
10 Jun - 16 Jun United
30 Jun - 14 Jul Lufthansa
12 Jun - 04 Jul Scandinavian Airlines
13 Jun - 20 Jun Lufthansa
30 Jun - 14 Jul Delta direct
18 Jun - 25 Jun Delta
04 Jun - 07 Jun Alaska Airlines
17 Jun - 11 Jul United
15 Jun - 27 Jun Delta direct
10 Jun - 16 Jun British Airways direct
27 Jun - 11 Jul United
13 Jun - 20 Jun Air France direct
12 Jun - 04 Jul Air France direct
17 Jun - 11 Jul Air France direct
27 Jun - 11 Jul Air France direct
04 Jun - 07 Jun Air France direct
08 Jun - 22 Jun British Airways direct

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

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