Cheapest return flights from Seattle to London in June from $804

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

Return flights

02 Jun - 13 Jun Scandinavian Airlines
16 Jun - 28 Jul Icelandair
06 Jun - 23 Jun Scandinavian Airlines
16 Jun - 30 Jun Scandinavian Airlines
23 Jun - 30 Jun Scandinavian Airlines
04 Jun - 16 Jun Icelandair
04 Jun - 16 Jun British Airways direct
14 Jun - 04 Jul Scandinavian Airlines
15 Jun - 27 Jun Lufthansa
20 Jun - 27 Jun Scandinavian Airlines
20 Jun - 11 Jul Scandinavian Airlines
16 Jun - 30 Jun British Airways direct
24 Jun - 08 Jul Air Canada
03 Jun - 27 Jun Air Canada
17 Jun - 11 Jul Air Canada
11 Jun - 04 Jul WestJet
24 Jun - 08 Jul British Airways direct
14 Jun - 04 Jul British Airways direct
17 Jun - 11 Jul British Airways direct
11 Jun - 04 Jul British Airways direct

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.