Cheap flights from London to Seattle – Compare and Save
LON — SEA
22 May — 29 May1
Return
1 adult
Economy
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 17 May 2025.
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 17 May 2025.
Fri 30/508:40LHR - SEA
2 stops20h 31mSWISS
Mon 2/616:25SEA - LHR
1 stop16h 00mSWISS
Deal found 16/5£474
Sun 25/514:45LGW - SEA
2 stops58h 43mAmerican Airlines
Mon 2/617:45SEA - LGW
2 stops30h 25mAmerican Airlines
Deal found 16/5£475
Mon 26/509:50LHR - SEA
Nonstop9h 45mBritish Airways
Mon 9/613:30SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 16/5£475
Tue 24/609:20LGW - SEA
2 stops38h 40mMultiple Airlines
Mon 11/815:45SEA - LGW
1 stop12h 00mMultiple Airlines
Deal found 16/5£475
Wed 12/1116:10LHR - SEA
Nonstop10h 10mDelta
Tue 18/1111:59SEA - LHR
1 stop16h 16mDelta
Deal found 16/5£475
Sun 25/510:50LHR - SEA
1 stop14h 09mUnited Airlines
Tue 3/609:45SEA - LHR
1 stop16h 40mUnited Airlines
Deal found 16/5£476
Fri 20/618:00LHR - SEA
Nonstop10h 20mAir France
Mon 23/620:25SEA - LHR
Nonstop9h 50mAir France
Deal found 16/5£477
Tue 17/615:40LGW - SEA
1 stop13h 00mIcelandair
Fri 27/623:30SEA - LGW
1 stop28h 15mIcelandair
Deal found 16/5£478
Tue 17/606:30LHR - SEA
1 stop13h 55mLufthansa
Thu 26/600:20SEA - LHR
1 stop22h 00mLufthansa
Deal found 16/5£478
Wed 8/1006:30LHR - SEA
2 stops15h 46mUnited Airlines
Wed 22/1007:00SEA - LHR
2 stops16h 15mUnited Airlines
Deal found 16/5£479
Mon 26/516:40LHR - SEA
1 stop36h 01mLufthansa
Mon 9/608:00SEA - LHR
2 stops17h 20mLufthansa
Deal found 16/5£480
Sun 25/506:30LHR - SEA
2 stops18h 06mMultiple Airlines
Sat 7/617:35SEA - LHR
Nonstop9h 45mMultiple Airlines
Deal found 16/5£481