Cheapest return flights from Seattle to London in June from 813€

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

Return flights

13 Jun - 23 Jun Scandinavian Airlines
21 Jun - 28 Jun Lufthansa

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

Skyscanner

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.