Book United London to Seattle flight deals from $1,449

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Downtown Seattle at sunset

Plan ahead for flights from London to Seattle

from
to
Type
Dates
Price*
London (LHR)
to Seattle (SEA)
Roundtrip
Depart Mon 5 Aug 2019
Return Mon 19 Aug 2019
from$ 1,449*Viewed: 8 hours ago
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Weather in Seattle

54 °FSaturday10/20/2018
51 °FSunday10/21/2018
55 °FMonday10/22/2018
50 °FTuesday10/23/2018
51 °FWednesday10/24/2018
50 °FThursday10/25/2018
54 °FFriday10/26/2018
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