Book United London to Seattle flight deals from £279

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Search flights from London to Seattle (LHR - SEA)

October

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Thursday 25th

Return Friday 9th
from£ 279*Viewed: 1 minute ago

Sunday 28th

Return Monday 12th
from£ 295*Viewed: 1 minute ago

Wednesday 31st

Return Thursday 15th
from£ 291*Viewed: 1 minute ago

November

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Tuesday 6th

Return Wednesday 21st
from£ 291*Viewed: 1 minute ago

Sunday 18th

Return Monday 3rd
from£ 291*Viewed: 1 minute ago

Wednesday 28th

Return Thursday 13th
from£ 291*Viewed: 1 minute ago

December

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Saturday 1st

Return Sunday 16th
from£ 279*Viewed: 1 minute ago

Sunday 2nd

Return Monday 17th
from£ 279*Viewed: 1 minute ago

Sunday 9th

Return Monday 24th
from£ 291*Viewed: 1 minute 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..
Downtown Seattle at sunset

Plan ahead for flights from London to Seattle

from
to
Type
Dates
Price*
London (LHR)
to Seattle (SEA)
Roundtrip
Depart Thu 25 Oct 2018
Return Fri 9 Nov 2018
from£ 279*Viewed: 1 minute ago
London (LHR)
to Seattle (SEA)
Roundtrip
Depart Sat 1 Dec 2018
Return Sun 16 Dec 2018
from£ 279*Viewed: 1 minute ago
London (LHR)
to Seattle (SEA)
Roundtrip
Depart Sun 2 Dec 2018
Return Mon 17 Dec 2018
from£ 279*Viewed: 1 minute ago
London (LHR)
to Seattle (SEA)
Roundtrip
Depart Wed 31 Oct 2018
Return Thu 15 Nov 2018
from£ 291*Viewed: 1 minute ago
London (LHR)
to Seattle (SEA)
Roundtrip
Depart Sat 3 Nov 2018
Return Sun 18 Nov 2018
from£ 291*Viewed: 1 minute ago
London (LHR)
to Seattle (SEA)
Roundtrip
Depart Mon 5 Nov 2018
Return Tue 20 Nov 2018
from£ 291*Viewed: 1 minute ago
London (LHR)
to Seattle (SEA)
Roundtrip
Depart Tue 6 Nov 2018
Return Wed 21 Nov 2018
from£ 291*Viewed: 1 minute ago
London (LHR)
to Seattle (SEA)
Roundtrip
Depart Wed 7 Nov 2018
Return Thu 22 Nov 2018
from£ 291*Viewed: 1 minute ago
London (LHR)
to Seattle (SEA)
Roundtrip
Depart Mon 12 Nov 2018
Return Tue 27 Nov 2018
from£ 291*Viewed: 1 minute ago
London (LHR)
to Seattle (SEA)
Roundtrip
Depart Fri 16 Nov 2018
Return Sat 1 Dec 2018
from£ 291*Viewed: 1 minute 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.