Cheapest return flights from Seattle to London in June from $741

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

Return flights

02 Jun - 16 Jun Scandinavian Airlines
03 Jun - 10 Jun Icelandair
01 Jun - 07 Jun Icelandair
02 Jun - 02 Jul Scandinavian Airlines
12 Jun - 23 Jun Scandinavian Airlines
09 Jun - 12 Jun Scandinavian Airlines
08 Jun - 15 Jun Icelandair
18 Jun - 02 Jul Icelandair
18 Jun - 29 Jun Icelandair
04 Jun - 29 Jun Icelandair
19 Jun - 26 Jun Icelandair
25 Jun - 02 Jul Icelandair
11 Jun - 30 Jun Icelandair
26 Jun - 05 Jul Icelandair
04 Jun - 02 Jul Icelandair
24 Jun - 10 Jul Icelandair
28 Jun - 05 Jul Icelandair
25 Jun - 23 Jul Icelandair
02 Jun - 02 Jul Air France direct
21 Jun - 13 Jul Virgin Atlantic

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

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