Cheapest return flights from Seattle to London in June from 640€

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

Return flights

03 Jun - 10 Jun Icelandair
02 Jun - 07 Jun Icelandair
06 Jun - 21 Jun Icelandair
07 Jun - 14 Jun Scandinavian Airlines
11 Jun - 23 Jun Icelandair
23 Jun - 07 Jul Finnair
22 Jun - 05 Jul Icelandair
21 Jun - 04 Jul Icelandair
24 Jun - 09 Jul Icelandair

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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