Cheapest return flights from Seattle to London in June from $787

Best time to book flights for Seattle (SEA) to London (LHR) flights at AirHint

AirHint found the following cheapest return flights from Seattle (SEA) to London (LHR) in June 2025 (see full year).

Return flights

01 Jun - 16 Jun Icelandair
05 Jun - 08 Jun Icelandair
06 Jun - 16 Jun Icelandair
06 Jun - 15 Jun Icelandair
02 Jun - 06 Jun Icelandair
12 Jun - 16 Jun Icelandair
12 Jun - 15 Jun Icelandair
13 Jun - 27 Jun Icelandair
24 Jun - 08 Jul Icelandair
05 Jun - 23 Jun Icelandair
12 Jun - 23 Jun Icelandair
25 Jun - 07 Jul Icelandair
17 Jun - 15 Jul Aer Lingus
23 Jun - 02 Jul Aer Lingus
17 Jun - 15 Jul British Airways direct
24 Jun - 08 Jul Virgin Atlantic direct
23 Jun - 02 Jul Air France direct
26 Jun - 18 Jul Icelandair
21 Jun - 05 Jul Air Canada
26 Jun - 07 Jul Icelandair

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.

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