Cheapest return SEA–STN flights, June

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

Return flights

01 Jun - 09 Jun Icelandair
01 Jun - 08 Jun Air France
08 Jun - 15 Jun Icelandair
08 Jun - 12 Jun Icelandair
11 Jun - 18 Jun Icelandair
05 Jun - 14 Jun Icelandair
02 Jun - 18 Jun Icelandair
09 Jun - 12 Jun SWISS
18 Jun - 25 Jun WestJet
10 Jun - 15 Jun SWISS
23 Jun - 07 Jul Icelandair
24 Jun - 08 Jul Icelandair
24 Jun - 09 Jul Icelandair
25 Jun - 07 Jul Icelandair
22 Jun - 20 Jul Icelandair
25 Jun - 13 Jul Icelandair
25 Jun - 23 Jul Icelandair
26 Jun - 05 Jul Icelandair
18 Jun - 01 Jul WestJet
19 Jun - 04 Jul WestJet

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

Powered by

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.

Book a cheap hotel in London

Cheap car rent in London

Feel free to contact us with any feedback or request another flight research.