LHR to SEA from $497 in economy – flightdeals.net

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Icelandair

Round Trip•Economy

London Heathrow Airport

London Heathrow, United Kingdom

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

$694 USD

-28%$497 USD

Verified about 14 hours ago

June 2026

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Tue

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Sun

1 2 3 4 5 6$810 7$770 8$703 9$690 10$691 11$710 12$510 13$510 14$510 15$510 16$772 17$510 18$510 19$510 20$510 21$510 22$510 23$510 24$510 25$510 26$510 27$857 28$770 29$770 30$670 1$770 2$990 3$1,188 4$1,048 5$1,021

Fair Availability

37% of dates checked are available within 10% of the lowest price

Thursday, June 4th, 2026

0 round-trip options

No flight details available for this date.