Cheapest return flights from Seattle to London in June from $695

Best time to book flights for Seattle (SEA) to London (LHR) flights at AirHint

AirHint found the following cheapest return flights from Seattle (SEA) to London (LHR) in June 2025 (see full year).

Return flights

03 Jun - 10 Jun Icelandair
06 Jun - 13 Jun Icelandair
04 Jun - 13 Jun Icelandair
05 Jun - 15 Jun Icelandair
04 Jun - 11 Jun Hawaiian Airlines
12 Jun - 26 Jun Icelandair
12 Jun - 22 Jun Icelandair
08 Jun - 15 Jun Icelandair
09 Jun - 15 Jun Icelandair
12 Jun - 23 Jun Icelandair
30 Jun - 09 Jul Icelandair
26 Jun - 09 Jul Icelandair
30 Jun - 10 Jul Icelandair
23 Jun - 10 Jul Icelandair
29 Jun - 06 Jul Scandinavian Airlines
29 Jun - 08 Jul Scandinavian Airlines
30 Jun - 05 Jul Scandinavian Airlines
17 Jun - 01 Jul Iberia
28 Jun - 03 Jul Scandinavian Airlines
29 Jun - 09 Jul Spirit Airlines

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

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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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