Cheapest return flights from London (LHR) to Seattle (SEA), August

18 dates in August 2027, from $ 574. Book in one tap, or check whether to buy now or wait.

One-wayReturn
Dates, airline, and price
Dates Airline Price
21 Aug 29 Aug 2027 Alaska Airlines
Direct Flight
20 Aug 28 Aug 2027 Alaska Airlines
Direct Flight
20 Aug 29 Aug 2027 Alaska Airlines
Direct Flight
6 Aug 28 Aug 2027 Alaska Airlines
Direct Flight
6 Aug 14 Aug 2027 Alaska Airlines
Direct Flight
6 Aug 21 Aug 2027 Alaska Airlines
Direct Flight
20 Aug 1 Sep 2027 Alaska Airlines
Direct Flight
9 Aug 25 Aug 2027 Alaska Airlines
Direct Flight
16 Aug 27 Aug 2027 Alaska Airlines
Direct Flight
15 Aug 28 Aug 2027 Alaska Airlines
Direct Flight
29 Aug 6 Sep 2027 Icelandair
23 Aug 13 Sep 2027 Icelandair
22 Aug 5 Sep 2027 Icelandair
21 Aug 3 Sep 2027 United
17 Aug 5 Sep 2027 Finnair
29 Aug 6 Sep 2027 British Airways
Direct Flight
21 Aug 3 Sep 2027 Virgin Atlantic
Direct Flight
17 Aug 23 Aug 2027 Finnair
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About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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