How long is the flight from London Heathrow to Seattle?

LHR–SEA is 9h 55m nonstop, covering 7,702 km (4,786 mi).

Which airlines fly nonstop from London Heathrow to Seattle?

Alaska Airlines, British Airways, Delta Air Lines, Virgin Atlantic operate this route nonstop.

How much is a flight from London Heathrow to Seattle?

One-way fares on LHR–SEA recently started from $491 ($659 nonstop). The lowest recent fare is for travel in January 2027. Fares change daily, so check current prices before booking.

How often do flights run from London Heathrow to Seattle?

The route is served 7 days a week (24 scheduled departures).

Flights from London Heathrow to Seattle

LHRSEA

London Heathrow Airport (London, United Kingdom) → Seattle–Tacoma International Airport (Seattle, United States)

Nonstop: 9h 55m
Distance: 7,702 km
Frequency: 7×/week
One-way from: $491
Airlines: Alaska Airlines, British Airways, Delta Air Lines, Virgin Atlantic

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Fares by month

One-way, per person

Lowest fares Aviasales travelers found in recent searches; some may include a connection. Prices change often — tap a month to see live fares.

Weekly schedule

Monday

DL2112:20→14:5010h 30mDelta Air Lines
AS10114:45→17:0010h 15mAlaska Airlines
BA4914:55→16:509h 55mBritish Airways

Tuesday

BA5309:25→11:2510hBritish Airways
DL2112:20→14:5010h 30mDelta Air Lines
AS10114:45→17:0010h 15mAlaska Airlines
BA4914:55→16:509h 55mBritish Airways

Wednesday

DL2112:20→14:5010h 30mDelta Air Lines
AS10114:45→17:0010h 15mAlaska Airlines
BA4914:55→16:509h 55mBritish Airways

Thursday

BA5309:25→11:2510hBritish Airways
DL2112:20→14:5010h 30mDelta Air Lines
AS10114:45→17:0010h 15mAlaska Airlines
BA4914:55→16:509h 55mBritish Airways

Friday

DL2112:20→14:5010h 30mDelta Air Lines
AS10114:45→17:0010h 15mAlaska Airlines
BA4914:55→16:509h 55mBritish Airways

Saturday

BA5309:25→11:2510hBritish Airways
DL2112:20→14:5010h 30mDelta Air Lines
AS10114:45→17:0010h 15mAlaska Airlines
BA4914:55→16:509h 55mBritish Airways

Sunday

DL2112:20→14:5010h 30mDelta Air Lines
AS10114:45→17:0010h 15mAlaska Airlines
BA4914:55→16:509h 55mBritish Airways

London Heathrow to Seattle — frequently asked

How long is the flight from London Heathrow to Seattle?: LHR–SEA is 9h 55m nonstop, covering 7,702 km (4,786 mi).
Which airlines fly nonstop from London Heathrow to Seattle?: Alaska Airlines, British Airways, Delta Air Lines, Virgin Atlantic operate this route nonstop.
How much is a flight from London Heathrow to Seattle?: One-way fares on LHR–SEA recently started from $491 ($659 nonstop). The lowest recent fare is for travel in January 2027. Fares change daily, so check current prices before booking.
How often do flights run from London Heathrow to Seattle?: The route is served 7 days a week (24 scheduled departures).