Cheapest return flights from Seattle to London in June from 634€

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

Return flights

03 Jun - 10 Jun Icelandair
06 Jun - 21 Jun Scandinavian Airlines
28 Jun - 10 Jul Scandinavian Airlines
23 Jun - 07 Jul Scandinavian Airlines
08 Jun - 15 Jun Icelandair
21 Jun - 04 Jul Scandinavian Airlines
18 Jun - 27 Jun Icelandair
07 Jun - 14 Jun United
18 Jun - 25 Jun Icelandair
13 Jun - 20 Jun Icelandair
07 Jun - 14 Jun Air France direct
15 Jun - 30 Jun Delta
24 Jun - 08 Jul Delta
19 Jun - 26 Jun Scandinavian Airlines
24 Jun - 09 Jul Lufthansa
17 Jun - 06 Jul Air Canada
22 Jun - 05 Jul Icelandair
28 Jun - 10 Jul British Airways direct
27 Jun - 04 Jul Delta
24 Jun - 09 Jul Virgin Atlantic direct

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

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