Cheapest return flights from Seattle to London in July from $671

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

Return flights

28 Jul - 22 Aug Iberia
21 Jul - 15 Aug Scandinavian Airlines
26 Jul - 09 Aug Air Canada
28 Jul - 22 Aug British Airways direct
31 Jul - 14 Aug Lufthansa
11 Jul - 15 Aug Scandinavian Airlines
26 Jul - 09 Aug British Airways direct
23 Jul - 30 Jul Lufthansa
23 Jul - 30 Jul Air France direct
21 Jul - 15 Aug Air France direct
11 Jul - 15 Aug Air France direct
05 Jul - 19 Jul Air Canada
05 Jul - 10 Jul Scandinavian Airlines
11 Jul - 17 Jul Scandinavian Airlines
05 Jul - 19 Jul Air France direct
05 Jul - 10 Jul American Airlines direct
11 Jul - 17 Jul British Airways direct

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

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