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 5 September 2025.

Sat 20/914:10LHR - SEA

1 stop16h 10mMultiple Airlines

Wed 22/1008:00SEA - LHR

1 stop14h 55mMultiple Airlines

Deal found 4/9£462

Sun 5/1020:55LHR - SEA

1 stop22h 55mMultiple Airlines

Mon 20/1017:35SEA - LHR

Nonstop9h 45mMultiple Airlines

Deal found 5/9£463

Thu 11/915:40LGW - SEA

1 stop13h 00mIcelandair

Mon 15/915:45SEA - LGW

1 stop14h 50mIcelandair

Deal found 5/9£464

Tue 9/921:25LHR - SEA

1 stop22h 00mIcelandair

Tue 21/1015:45SEA - LHR

1 stop12h 10mIcelandair

Deal found 4/9£464

Thu 11/918:40LGW - SEA

2 stops31h 56mSWISS

Mon 15/916:25SEA - LGW

1 stop17h 25mSWISS

Deal found 4/9£465

Mon 1/1214:55LHR - SEA

Nonstop10h 00mBritish Airways

Tue 9/1208:30SEA - LHR

1 stop19h 45mBritish Airways

Deal found 3/9£465

Mon 3/1109:00LGW - SEA

2 stops33h 35mMultiple Airlines

Tue 18/1121:34SEA - LGW

1 stop24h 26mMultiple Airlines

Deal found 3/9£466

Wed 17/909:25LCY - SEA

2 stops19h 29mSWISS

Tue 23/914:29SEA - LCY

2 stops19h 01mSWISS

Deal found 4/9£466

Mon 22/911:45LHR - SEA

2 stops19h 58mDelta

Thu 2/1007:25SEA - LHR

2 stops17h 50mDelta

Deal found 4/9£466

Sat 1/1112:20LHR - SEA

Nonstop10h 25mVirgin Atlantic

Thu 6/1116:48SEA - LHR

Nonstop9h 42mVirgin Atlantic

Deal found 4/9£467

Sat 11/1015:40LGW - SEA

1 stop13h 00mIcelandair

Sat 1/1115:35SEA - LGW

1 stop12h 20mIcelandair

Deal found 4/9£467

Sat 20/908:30LHR - SEA

2 stops17h 24mUnited Airlines

Thu 2/1012:00SEA - LHR

1 stop15h 50mUnited Airlines

Deal found 5/9£467

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 5 September 2025.

Tue 4/1113:25LHR - SEA

2 stops28h 06mAir Canada

Sun 16/1105:50SEA - LHR

2 stops17h 20mAir Canada

Deal found 4/9£462

Mon 22/910:30LHR - SEA

1 stop16h 39mBritish Airways

Thu 23/1007:44SEA - LHR

1 stop14h 41mBritish Airways

Deal found 4/9£462

Wed 17/906:30LHR - SEA

1 stop13h 15mDelta

Wed 1/1006:00SEA - LHR

2 stops17h 15mDelta

Deal found 4/9£462

Sat 20/914:10LHR - SEA

1 stop16h 10mMultiple Airlines

Wed 22/1008:00SEA - LHR

1 stop14h 55mMultiple Airlines

Deal found 4/9£462

Wed 17/911:30LHR - SEA

1 stop14h 10mAir France

Tue 30/920:25SEA - LHR

Nonstop9h 50mAir France

Deal found 5/9£462

Wed 17/909:25LCY - SEA

2 stops19h 29mSWISS

Tue 23/914:29SEA - LCY

2 stops19h 01mSWISS

Deal found 4/9£466

Sat 11/1015:40LGW - SEA

1 stop13h 00mIcelandair

Sat 1/1115:35SEA - LGW

1 stop12h 20mIcelandair

Deal found 4/9£467

Thu 13/1118:15LCY - SEA

1 stop25h 55mLufthansa

Mon 17/1114:00SEA - LCY

1 stop18h 40mLufthansa

Deal found 2/9£474

Tue 16/909:55LHR - SEA

1 stop14h 10mDelta

Thu 2/1007:25SEA - LHR

2 stops17h 50mDelta

Deal found 4/9£462

Sat 20/914:10LHR - SEA

1 stop16h 10mMultiple Airlines

Mon 22/914:00SEA - LHR

1 stop13h 45mMultiple Airlines

Deal found 4/9£462

Tue 2/1209:25LHR - SEA

Nonstop10h 05mBritish Airways

Tue 9/1209:00SEA - LHR

1 stop13h 55mBritish Airways

Deal found 5/9£462

Wed 17/909:25LCY - SEA

2 stops19h 29mSWISS

Wed 24/915:10SEA - LCY

2 stops18h 05mSWISS

Deal found 4/9£466

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 5 September 2025.

Mon 24/1114:55LHR - SEA

Nonstop10h 00mFinnair

Mon 8/1218:50SEA - LHR

Nonstop9h 30mFinnair

Deal found 5/9£464

Fri 3/1013:25LHR - SEA

Nonstop10h 05mVirgin Atlantic

Tue 7/1020:25SEA - LHR

Nonstop9h 50mVirgin Atlantic

Deal found 2/9£465

Wed 26/1114:55LHR - SEA

Nonstop10h 00mBritish Airways

Tue 2/1218:50SEA - LHR

Nonstop9h 30mBritish Airways

Deal found 4/9£466

Sat 1/1112:20LHR - SEA

Nonstop10h 25mVirgin Atlantic

Thu 6/1116:48SEA - LHR

Nonstop9h 42mVirgin Atlantic

Deal found 4/9£467

Fri 7/1112:20LHR - SEA

Nonstop10h 28mVirgin Atlantic

Tue 11/1119:20SEA - LHR

Nonstop9h 30mVirgin Atlantic

Deal found 4/9£467

Mon 15/917:25LHR - SEA

Nonstop10h 25mAir France

Mon 29/920:25SEA - LHR

Nonstop9h 50mAir France

Deal found 3/9£468

Mon 15/917:25LHR - SEA

Nonstop10h 25mVirgin Atlantic

Mon 29/917:35SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 4/9£470

Wed 1/1017:25LHR - SEA

Nonstop10h 25mDelta

Thu 9/1020:25SEA - LHR

Nonstop9h 50mDelta

Deal found 4/9£470

Wed 17/917:25LHR - SEA

Nonstop10h 25mDelta

Wed 22/1020:25SEA - LHR

Nonstop9h 50mDelta

Deal found 4/9£471

Mon 2/312:20LHR - SEA

Nonstop10h 25mDelta

Tue 10/317:40SEA - LHR

Nonstop9h 50mDelta

Deal found 3/9£473

Wed 17/917:25LHR - SEA

Nonstop10h 25mVirgin Atlantic

Sun 21/917:35SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 4/9£473

Mon 15/917:25LHR - SEA

Nonstop10h 25mDelta

Thu 25/920:25SEA - LHR

Nonstop9h 50mDelta

Deal found 4/9£474

Last-minute flights from London to Seattle
Discover last-minute flight deals from London to Seattle. Data last updated 5 September 2025 and is based on user searches.

Wed 10/909:30LHR - SEA

1 stop18h 01mAir Canada

Mon 15/910:00SEA - LHR

2 stops17h 50mAir Canada

Deal found 3/9£465

Wed 10/921:25LHR - SEA

1 stop22h 00mIcelandair

Mon 15/915:45SEA - LHR

1 stop20h 35mIcelandair

Deal found 5/9£467

Wed 10/908:30LHR - SEA

2 stops18h 06mMultiple Airlines

Fri 24/1010:00SEA - LHR

1 stop19h 20mMultiple Airlines

Deal found 3/9£468

Wed 10/915:35LGW - SEA

1 stop13h 05mIcelandair

Fri 24/1019:00SEA - LGW

1 stop11h 40mIcelandair

Deal found 3/9£473

Thu 11/915:40LGW - SEA

1 stop13h 00mIcelandair

Mon 15/915:45SEA - LGW

1 stop14h 50mIcelandair

Deal found 5/9£464

Thu 11/918:40LGW - SEA

2 stops31h 56mSWISS

Mon 15/916:25SEA - LGW

1 stop17h 25mSWISS

Deal found 4/9£465

Thu 11/914:10LHR - SEA

1 stop16h 06mAir Canada

Mon 15/919:15SEA - LHR

2 stops41h 45mAir Canada

Deal found 4/9£473

Mon 15/911:25LHR - SEA

1 stop14h 26mUnited Airlines

Mon 29/908:42SEA - LHR

2 stops16h 58mUnited Airlines

Deal found 5/9£462

Mon 15/913:05LHR - SEA

1 stop18h 49mVirgin Atlantic

Mon 29/907:50SEA - LHR

1 stop14h 55mVirgin Atlantic

Deal found 3/9£470

Mon 15/917:25LHR - SEA

Nonstop10h 25mAir France

Tue 23/920:25SEA - LHR

Nonstop9h 50mAir France

Deal found 4/9£470

Sat 11/1015:40LGW - SEA

1 stop13h 00mIcelandair

Sat 1/1115:35SEA - LGW

1 stop12h 20mIcelandair

Deal found 4/9£467

Fri 17/1009:20LGW - SEA

2 stops19h 20mMultiple Airlines

Mon 27/1015:35SEA - LGW

3 stops36h 00mMultiple Airlines

Deal found 4/9£471

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 5 September 2025.

Sat 20/910:45LGW - SEA

2 stops40h 36mWestJet

Deal found 5/9£377

Wed 1/1010:45LGW - SEA

2 stops40h 36mWestJet

Deal found 4/9£378

Sat 20/914:10LHR - SEA

1 stop13h 42mMultiple Airlines

Deal found 3/9£379

Wed 24/921:25LHR - SEA

3 stops31h 12mMultiple Airlines

Deal found 4/9£380

Wed 24/921:25LHR - SEA

2 stops29h 56mMultiple Airlines

Deal found 4/9£380

Fri 19/910:45LGW - SEA

2 stops40h 36mWestJet

Deal found 3/9£381

Wed 17/921:25LHR - SEA

2 stops30h 27mMultiple Airlines

Deal found 3/9£381

Fri 19/914:10LHR - SEA

2 stops27h 11mMultiple Airlines

Deal found 3/9£382

Sun 28/914:00LGW - SEA

2 stops37h 36mMultiple Airlines

Deal found 3/9£383

Mon 29/908:30STN - SEA

2 stops19h 59mMultiple Airlines

Deal found 4/9£383

Thu 18/914:10LHR - SEA

1 stop25h 05mMultiple Airlines

Deal found 4/9£383

Thu 18/919:40LGW - SEA

3 stops56h 59mMultiple Airlines

Deal found 4/9£383

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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 5 September 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 5 September 2025.

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 5 September 2025.