London to Seattle (LHR-SEA): nonstop upgrade & award space

British Airways, Alaska Airlines, Delta Air Lines, and Virgin Atlantic fly nonstop between London (LHR) and Seattle (SEA), roughly 35 times a week. Long-haul cabins on a corridor this busy are large but never idle: premium cabin inventory reshuffles around every schedule change, and the best dates go first. 2LNR tracks confirmed upgrade and award space on Alaska Airlines and Delta Air Lines, on every LHR to SEA departure, so you know which flights have space before you book.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

See LHR to SEA on the interactive map Get started free
35
Nonstop flights a week
4,786 mi
Nonstop distance
Free
To get started

London to Seattle flight schedule

Scheduled nonstop departures for LHR to SEA, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from London (LHR) to Seattle (SEA)
Date Flight Airline Departs LHR Arrives SEA Duration Aircraft
BA 53British Airways09:5011:359h 45m781
VS 105Virgin Atlantic11:4014:0010h 20m339
BA 49British Airways16:3018:259h 55m77W
AS 101Alaska Airlines, Inc.17:0019:0010h789
DL 21Delta Air Lines17:4520:1010h 25m339
BA 53British Airways09:5011:359h 45m781
VS 105Virgin Atlantic11:4014:0010h 20m339
BA 49British Airways16:3018:259h 55m77W
AS 101Alaska Airlines, Inc.17:0019:0010h789
DL 21Delta Air Lines17:4520:1010h 25m339
BA 53British Airways09:5011:359h 45m781
VS 105Virgin Atlantic11:4014:0010h 20m339
BA 49British Airways16:3018:259h 55m77W
AS 101Alaska Airlines, Inc.17:0019:0010h789
DL 21Delta Air Lines17:4520:1010h 25m339
BA 53British Airways09:5011:359h 45m781
VS 105Virgin Atlantic11:4014:0010h 20m339
BA 49British Airways16:3018:259h 55m77W
AS 101Alaska Airlines, Inc.17:0019:0010h789
DL 21Delta Air Lines17:4520:1010h 25m339
BA 53British Airways09:5011:359h 45m781
VS 105Virgin Atlantic11:4014:0010h 20m339
BA 49British Airways16:3018:259h 55m77W
AS 101Alaska Airlines, Inc.17:0019:0010h789
DL 21Delta Air Lines17:4520:1010h 25m339
BA 53British Airways09:5011:359h 45m781
VS 105Virgin Atlantic11:4014:0010h 20m339
BA 49British Airways16:3018:259h 55m77W
AS 101Alaska Airlines, Inc.17:0019:0010h789
DL 21Delta Air Lines18:3020:5310h 23m339
BA 53British Airways09:5011:359h 45m781
VS 105Virgin Atlantic11:4014:0010h 20m339
BA 49British Airways16:3018:259h 55m77W
AS 101Alaska Airlines, Inc.17:0019:0010h789
DL 21Delta Air Lines17:4520:1010h 25m339

Showing all 35 scheduled LHR to SEA departures across the next 7 days with service. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every LHR to SEA date on the interactive map

Confirmed upgrade & award space on LHR to SEA departures

2LNR tracks confirmed upgrade and award space on Alaska Airlines and Delta Air Lines, segment by segment and date by date. Open the calendar for London to Seattle to see which departures have space, the next 14 days free on every product and the full horizon on Pro.

See real availability

Confirmed upgrade and award seats on each LHR to SEA departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See LHR to SEA on the interactive route map, with schedules, connections, and route statistics.

Airlines flying London to Seattle nonstop

Carriers operating LHR to SEA nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See LHR to SEA on the interactive map →

Frequently asked questions about LHR to SEA

How far is Seattle from London?
LHR to SEA covers about 4,786 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from LHR to SEA?
British Airways, Alaska Airlines, Delta Air Lines, and Virgin Atlantic fly the route nonstop. 2LNR tracks confirmed upgrade and award space on Alaska Airlines and Delta Air Lines.
How many flights a week are there from LHR to SEA?
About 35 nonstop flights a week run between London and Seattle in the current schedule, operated by British Airways, Alaska Airlines, Delta Air Lines, and Virgin Atlantic. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from LHR to SEA depart?
Scheduled LHR to SEA nonstops in the next 7 days with service leave between 09:50 and 18:30, local time at London. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
How do I check upgrade or award availability on LHR to SEA?
Open the LHR to SEA route on the interactive map or the matrix to see confirmed upgrade and award space by date on Alaska Airlines and Delta Air Lines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

Never miss LHR to SEA upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

Get started free