Cheapest one-way flights from London (LHR) to Seattle (SEA), April

8 dates in April 2027, from $ 444. Book in one tap, or check whether to buy now or wait.

One-wayReturn
Dates, airline, and price
Dates Airline Price
20 Apr 2027 Icelandair
28 Apr 2027 Icelandair
26 Apr 2027 Icelandair
18 Apr 2027 Icelandair
28 Apr 2027 Alaska Airlines
Direct Flight
18 Apr 2027 KLM
Direct Flight
20 Apr 2027 British Airways
Direct Flight
26 Apr 2027 British Airways
Direct Flight
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About these fares

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