Cheapest return flights from Seattle to London in July from $626

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

Return flights

29 Jul - 27 Aug Aer Lingus
08 Jul - 19 Aug Air Canada
21 Jul - 04 Aug Scandinavian Airlines
19 Jul - 16 Aug Delta direct
19 Jul - 27 Jul Scandinavian Airlines
16 Jul - 31 Aug British Airways direct
06 Jul - 13 Jul Icelandair
07 Jul - 20 Jul Scandinavian Airlines
10 Jul - 21 Jul Scandinavian Airlines
08 Jul - 19 Aug Air France direct
26 Jul - 02 Aug Air Canada
24 Jul - 30 Jul Scandinavian Airlines
15 Jul - 29 Jul Icelandair
18 Jul - 02 Aug Air Canada
21 Jul - 02 Aug Air Canada
17 Jul - 20 Jul Scandinavian Airlines
01 Jul - 07 Jul Icelandair
21 Jul - 02 Aug Air France direct
03 Jul - 07 Jul Scandinavian Airlines
01 Jul - 06 Jul Icelandair

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

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