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Cheapest flights from London to Seattle
Explore the most affordable flight options available from London to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 April 2026.

Fri 22/509:50

LHR

SEA

Nonstop9h 45m

British Airways

Wed 24/613:30

SEA

LHR

Nonstop9h 15m

British Airways

Deal found 29/3£454

Mon 27/406:30

STN

SEA

3 stops35h 10m

Multiple Airlines

Mon 4/515:40

SEA

STN

2 stops19h 35m

Multiple Airlines

Deal found 30/3£455

Thu 1/1016:30

LHR

SEA

Nonstop9h 55m

British Airways

Mon 12/1020:20

SEA

LHR

Nonstop9h 25m

British Airways

Deal found 30/3£462

Sat 25/413:05

LHR

SEA

1 stop12h 50m

Icelandair

Tue 5/515:40

SEA

LHR

1 stop12h 15m

Icelandair

Deal found 2/4£466

Sat 25/413:05

LHR

SEA

1 stop12h 50m

Icelandair

Mon 4/515:40

SEA

LHR

1 stop12h 15m

Icelandair

Deal found 2/4£467

Mon 13/408:30

STN

SEA

3 stops37h 49m

Multiple Airlines

Sun 26/415:40

SEA

STN

2 stops20h 15m

Multiple Airlines

Deal found 30/3£467

Wed 29/417:45

LHR

SEA

Nonstop10h 19m

Delta

Tue 5/512:10

SEA

LHR

1 stop16h 55m

Delta

Deal found 2/4£468

Mon 27/414:45

LHR

SEA

1 stop17h 51m

American Airlines

Tue 5/507:10

SEA

LHR

1 stop16h 30m

American Airlines

Deal found 2/4£470

Mon 27/410:45

LHR

SEA

1 stop19h 05m

Delta

Sun 3/521:45

SEA

LHR

Nonstop9h 50m

Delta

Deal found 2/4£471

Sat 25/409:50

LHR

SEA

Nonstop9h 45m

British Airways

Tue 5/520:20

SEA

LHR

Nonstop9h 25m

British Airways

Deal found 2/4£472

Wed 29/409:50

LHR

SEA

Nonstop9h 45m

British Airways

Mon 4/520:20

SEA

LHR

Nonstop9h 25m

British Airways

Deal found 2/4£476

Mon 13/421:25

LHR

SEA

1 stop31h 15m

Icelandair

Sun 26/415:40

SEA

LHR

1 stop12h 15m

Icelandair

Deal found 30/3£478

Best flights from London to Seattle
Discover carefully curated flight deals from London to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 April 2026.

Fri 1/506:20

LTN

SEA

3 stops35h 20m

Multiple Airlines

Mon 4/515:40

SEA

LTN

3 stops25h 30m

Multiple Airlines

Deal found 29/3£515

Wed 6/515:40

LGW

SEA

1 stop13h 00m

Icelandair

Sun 10/519:00

SEA

LGW

1 stop11h 40m

Icelandair

Deal found 29/3£527

Fri 12/611:45

LHR

SEA

1 stop12h 39m

KLM

Mon 22/618:20

SEA

LHR

Nonstop9h 50m

KLM

Deal found 1/4£565

Thu 11/610:25

LGW

SEA

1 stop15h 05m

Delta

Sun 5/718:35

SEA

LGW

1 stop13h 25m

Delta

Deal found 1/4£580

Thu 4/617:00

LHR

SEA

Nonstop9h 50m

Alaska Airlines

Mon 8/621:40

SEA

LHR

Nonstop9h 25m

Alaska Airlines

Deal found 1/4£581

Thu 3/919:50

LHR

SEA

2 stops25h 55m

Scandinavian Airlines

Thu 17/909:50

SEA

LHR

2 stops22h 10m

Scandinavian Airlines

Deal found 1/4£618

Wed 6/509:50

LHR

SEA

Nonstop9h 45m

British Airways

Sun 10/513:30

SEA

LHR

Nonstop9h 15m

British Airways

Deal found 1/4£629

Thu 13/810:25

LGW

SEA

2 stops21h 57m

Virgin Atlantic

Tue 25/813:30

SEA

LGW

1 stop18h 30m

Virgin Atlantic

Deal found 31/3£631

Tue 21/415:35

LGW

SEA

1 stop32h 05m

Condor

Fri 24/420:07

SEA

LGW

2 stops34h 33m

Condor

Deal found 1/4£748

Sat 16/510:50

STN

SEA

1 stop38h 25m

Turkish Airlines

Mon 3/819:10

SEA

STN

1 stop37h 40m

Turkish Airlines

Deal found 1/4£762

Wed 29/406:15

LTN

SEA

3 stops35h 25m

Multiple Airlines

Tue 5/513:30

SEA

LTN

3 stops23h 00m

Multiple Airlines

Deal found 1/4£570

Thu 14/506:30

LHR

SEA

1 stop13h 12m

Delta

Thu 28/520:10

SEA

LHR

Nonstop9h 50m

Delta

Deal found 31/3£582

Thu 30/417:45

LHR

SEA

Nonstop10h 19m

KLM

Thu 7/520:10

SEA

LHR

Nonstop9h 50m

KLM

Deal found 1/4£616

Thu 3/919:50

LHR

SEA

2 stops25h 55m

Scandinavian Airlines

Thu 17/909:50

SEA

LHR

2 stops22h 10m

Scandinavian Airlines

Deal found 31/3£618

Tue 28/419:00

LCY

SEA

1 stop24h 40m

Virgin Atlantic

Tue 5/506:00

SEA

LCY

2 stops17h 55m

Virgin Atlantic

Deal found 1/4£633

Wed 13/505:40

LTN

SEA

3 stops25h 00m

Multiple Airlines

Sun 17/519:00

SEA

LTN

2 stops16h 40m

Multiple Airlines

Deal found 1/4£581

Thu 4/610:25

LGW

SEA

1 stop15h 05m

Delta

Tue 9/613:30

SEA

LGW

1 stop11h 55m

Delta

Deal found 1/4£583

Wed 10/610:00

LCY

SEA

1 stop14h 24m

KLM

Mon 15/613:55

SEA

LCY

1 stop11h 35m

KLM

Deal found 29/3£634

Tue 28/409:20

LCY

SEA

2 stops20h 29m

Virgin Atlantic

Tue 5/506:00

SEA

LCY

2 stops17h 55m

Virgin Atlantic

Deal found 1/4£637

Fri 15/508:40

LHR

SEA

2 stops20h 01m

Delta

Sun 7/616:20

SEA

LHR

1 stop35h 00m

Delta

Deal found 1/4£588

Fri 1/506:20

LTN

SEA

3 stops35h 20m

Multiple Airlines

Mon 4/519:00

SEA

LTN

2 stops19h 05m

Multiple Airlines

Deal found 29/3£610

Sat 12/917:45

STN

SEA

1 stop31h 30m

Turkish Airlines

Thu 17/919:10

SEA

STN

1 stop37h 40m

Turkish Airlines

Deal found 2/4£769

Thu 30/408:25

LCY

SEA

1 stop16h 05m

Virgin Atlantic

Thu 7/505:30

SEA

LCY

2 stops18h 25m

Virgin Atlantic

Deal found 1/4£637

Fri 12/611:40

LHR

SEA

Nonstop10h 20m

Delta

Mon 22/622:05

SEA

LHR

Nonstop9h 30m

Delta

Deal found 29/3£602

Fri 24/410:20

LGW

SEA

1 stop13h 40m

Condor

Fri 1/518:00

SEA

LGW

1 stop12h 40m

Condor

Deal found 1/4£824

Mon 27/407:15

LTN

SEA

2 stops16h 55m

Multiple Airlines

Thu 30/413:30

SEA

LTN

3 stops24h 10m

Multiple Airlines

Deal found 30/3£633

Fri 15/509:20

LCY

SEA

2 stops22h 24m

Virgin Atlantic

Sat 6/617:45

SEA

LCY

1 stop18h 30m

Virgin Atlantic

Deal found 1/4£645

Mon 25/509:55

LHR

SEA

1 stop14h 35m

Delta

Mon 1/607:15

SEA

LHR

1 stop15h 05m

Delta

Deal found 28/3£621

Thu 14/517:35

STN

SEA

1 stop31h 40m

Turkish Airlines

Mon 14/919:10

SEA

STN

1 stop30h 45m

Turkish Airlines

Deal found 1/4£828

Wed 1/709:20

LCY

SEA

1 stop15h 00m

KLM

Fri 31/713:45

SEA

LCY

1 stop11h 45m

KLM

Deal found 1/4£772

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Find flight deals from London to Seattle

Cheapest flights from London to Seattle
Explore the most affordable flight options available from London to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 April 2026.

Explore the most affordable flight options available from London to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 April 2026.

Best flights from London to Seattle
Discover carefully curated flight deals from London to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 April 2026.

Discover carefully curated flight deals from London to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 April 2026.

Direct flights from London to Seattle
Explore direct flight options from London to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 2 April 2026.

Explore direct flight options from London to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 2 April 2026.

Last-minute flights from London to Seattle
Discover last-minute flight deals from London to Seattle. Data last updated 2 April 2026 and is based on user searches.

Discover last-minute flight deals from London to Seattle. Data last updated 2 April 2026 and is based on user searches.

One-way flights from London to Seattle
Search for one-way flight options from London to Seattle. Find affordable one-way fares based on user searches. Data last updated 2 April 2026.

Search for one-way flight options from London to Seattle. Find affordable one-way fares based on user searches. Data last updated 2 April 2026.

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Cheap flights from London to Seattle – Compare and Save

Find flight deals from London to Seattle

Cheapest flights from London to SeattleExplore the most affordable flight options available from London to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 April 2026.

Explore the most affordable flight options available from London to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 April 2026.

Best flights from London to SeattleDiscover carefully curated flight deals from London to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 April 2026.

Discover carefully curated flight deals from London to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 April 2026.

Direct flights from London to SeattleExplore direct flight options from London to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 2 April 2026.

Explore direct flight options from London to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 2 April 2026.

Last-minute flights from London to SeattleDiscover last-minute flight deals from London to Seattle. Data last updated 2 April 2026 and is based on user searches.

Discover last-minute flight deals from London to Seattle. Data last updated 2 April 2026 and is based on user searches.

One-way flights from London to SeattleSearch for one-way flight options from London to Seattle. Find affordable one-way fares based on user searches. Data last updated 2 April 2026.

Search for one-way flight options from London to Seattle. Find affordable one-way fares based on user searches. Data last updated 2 April 2026.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from London to Seattle
Explore the most affordable flight options available from London to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 April 2026.

Best flights from London to Seattle
Discover carefully curated flight deals from London to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 April 2026.

Direct flights from London to Seattle
Explore direct flight options from London to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 2 April 2026.

Last-minute flights from London to Seattle
Discover last-minute flight deals from London to Seattle. Data last updated 2 April 2026 and is based on user searches.

One-way flights from London to Seattle
Search for one-way flight options from London to Seattle. Find affordable one-way fares based on user searches. Data last updated 2 April 2026.