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

British Airways, Delta Air Lines, Alaska Airlines, and Virgin Atlantic fly nonstop between Seattle (SEA) and London (LHR), roughly 27 times a week. The timetable below shows the nonstop scheduled at 8h 45m to 10h 50m for the 4,786 miles. 2LNR checks confirmed upgrade and award space on Delta Air Lines and Alaska Airlines flights on this route, so you can see which departures have space before you book.

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

Updated .

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27
Flights a week, 4-week average
8h 45m to 10h 50m
Scheduled flight time
4,786 mi
Nonstop distance
Free
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Seattle to London flight schedule

Scheduled nonstop departures for SEA to LHR starting October 23, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Seattle (SEA) to London (LHR)
Date Flight Airline Departs SEA Arrives LHR Duration Aircraft
BA 52British Airways13:3006:459h 15mBoeing 787-10 Dreamliner
VS 106Virgin Atlantic17:3011:209h 50mAirbus A330-900neo
DL 292Delta Air Lines18:1511:008h 45mAirbus A330-200
BA 48British Airways20:2013:459h 25mBoeing 777-300ER
AS 100Alaska Airlines, Inc.21:4015:059h 25mBoeing 787-9 Dreamliner
DL 20Delta Air Lines21:5015:359h 45mAirbus A330-900neo
BA 52British Airways13:3005:459h 15mBoeing 787-10 Dreamliner
VS 106Virgin Atlantic17:3011:2010h 50mAirbus A330-900neo
DL 20Delta Air Lines17:4510:409h 55mAirbus A330-200
AS 100Alaska Airlines, Inc.19:4012:209h 40mBoeing 787-9 Dreamliner
BA 48British Airways20:2013:4510h 25mBoeing 777-300ER
DL 20Delta Air Lines17:4510:409h 55mAirbus A330-200
AS 100Alaska Airlines, Inc.19:4012:209h 40mBoeing 787-9 Dreamliner
BA 48British Airways20:2013:4510h 25mBoeing 777-300ER
DL 20Delta Air Lines17:4510:409h 55mAirbus A330-200
AS 100Alaska Airlines, Inc.19:4012:209h 40mBoeing 787-9 Dreamliner
BA 48British Airways20:2013:4510h 25mBoeing 777-300ER
BA 52British Airways13:3006:4510h 15mBoeing 787-10 Dreamliner
DL 20Delta Air Lines17:4510:409h 55mAirbus A330-200
AS 100Alaska Airlines, Inc.19:4012:209h 40mBoeing 787-9 Dreamliner
BA 48British Airways20:2013:4510h 25mBoeing 777-300ER
DL 20Delta Air Lines17:4510:409h 55mAirbus A330-200
AS 100Alaska Airlines, Inc.19:4012:209h 40mBoeing 787-9 Dreamliner
BA 48British Airways20:2013:4510h 25mBoeing 777-300ER
BA 52British Airways13:3006:4510h 15mBoeing 787-10 Dreamliner
DL 20Delta Air Lines17:4510:409h 55mAirbus A330-200
AS 100Alaska Airlines, Inc.19:4012:209h 40mBoeing 787-9 Dreamliner
BA 48British Airways20:2013:4510h 25mBoeing 777-300ER

Showing all 28 scheduled SEA to LHR departures across 7 days with service, starting October 23, 2026. 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 hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every SEA to LHR date on the interactive map

Aircraft on the Seattle to London nonstop

In the schedule table on this page, British Airways flies the Boeing 777-300ER and the Boeing 787-10 Dreamliner. Delta Air Lines flies the Airbus A330-200 and the Airbus A330-900neo. Alaska Airlines flies the Boeing 787-9 Dreamliner. Virgin Atlantic flies the Airbus A330-900neo. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

Confirmed upgrade & award space on SEA to LHR departures

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

In the 7 days to October 19, 2026, 2LNR checked award space on Seattle to London departures from October 19 to November 1. Delta Air Lines had space open on 10 of 14 dates checked and Alaska Airlines on 6 of 14.

See real availability

Confirmed upgrade or award seats by date on the SEA to LHR departures 2LNR tracks, checked against live inventory so you know what's open before you book.

Set an alert

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

Plan on the map

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

Airlines flying Seattle to London nonstop

Carriers operating SEA to LHR nonstop in the current schedule. Where 2LNR tracks the carrier, its departures show confirmed upgrade or award space by date.

See SEA to LHR on the interactive map →

Frequently asked questions about SEA to LHR

How long is the flight from Seattle (SEA) to London (LHR)?
Scheduled flight times from Seattle (SEA) to London (LHR) run from 8h 45m to 10h 50m across the departures in the schedule table on this page. The nonstop covers about 4,786 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from SEA to LHR?
British Airways, Delta Air Lines, Alaska Airlines, and Virgin Atlantic fly SEA to LHR nonstop. 2LNR tracks confirmed upgrade and award space on Delta Air Lines and Alaska Airlines.
How many flights a week are there from SEA to LHR?
About 27 nonstop flights a week run between Seattle (SEA) and London (LHR) in the current schedule, operated by British Airways, Delta Air Lines, Alaska Airlines, and Virgin Atlantic. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from SEA to LHR depart?
Scheduled SEA to LHR nonstops in the next 7 days with service leave between 13:30 and 21:50, local time at Seattle. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate SEA to LHR nonstop?
In the schedule table on this page, SEA to LHR nonstops fly as BA 48 and BA 52 on British Airways; DL 20 and DL 292 on Delta Air Lines; AS 100 on Alaska Airlines; and VS 106 on Virgin Atlantic. The table lists each departure by date with its times and aircraft.
How do I check upgrade or award availability on SEA to LHR?
Open the SEA to LHR route on the interactive map or the matrix to see confirmed upgrade and award space by date on Delta Air Lines and Alaska Airlines, 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 SEA to LHR upgrade or award space

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

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