Cheapest return flights from Seattle to London in July from $768

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

Return flights

13 Jul - 13 Aug Aer Lingus
07 Jul - 30 Jul Aer Lingus
13 Jul - 13 Aug Delta direct
07 Jul - 29 Jul Aer Lingus
27 Jul - 03 Aug Aer Lingus
21 Jul - 02 Aug Aer Lingus
13 Jul - 17 Aug Finnair
18 Jul - 02 Aug Aer Lingus
13 Jul - 17 Aug Delta direct
07 Jul - 08 Aug Aer Lingus
15 Jul - 02 Aug Aer Lingus
07 Jul - 29 Jul Alaska Airlines direct
01 Jul - 10 Jul Icelandair
27 Jul - 03 Aug Alaska Airlines direct
20 Jul - 30 Jul Air France direct
07 Jul - 19 Jul Aer Lingus
03 Jul - 10 Jul Scandinavian Airlines
04 Jul - 18 Jul Icelandair
04 Jul - 18 Jul Alaska Airlines direct
03 Jul - 10 Jul KLM direct

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

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