AirHint found the following cheapest return flights from Seattle (SEA) to London (LGW) in June 2026 (see full year).
Return flights
| 02 Jun - 09 Jun | Alaska Airlines | ||
| 05 Jun - 07 Jun | Icelandair | ||
| 13 Jun - 21 Jun | Icelandair | ||
| 14 Jun - 05 Jul | Finnair | ||
| 25 Jun - 23 Jul | Alaska Airlines | ||
| 26 Jun - 05 Jul | Icelandair | ||
| 23 Jun - 30 Jun | Condor |
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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