LondontoSeattleFlight Time
LHR–SEA · Nonstop
London (London Heathrow Airport) to Seattle (Seattle-Tacoma International Airport).
The estimated flight time from London (LHR) to Seattle (SEA) is about 10h 27m, covering 4,786 miles. British Airways, Delta Air Lines, and Alaska Airlines fly the route nonstop with 5-6/day departures, from 01:53 to 18:30 local time.
Plan this routeAt a glance
| Est. flight time | Distance | Route type | Captured freq. | Market |
|---|---|---|---|---|
| ~10h 27m Estimated from great-circle distance — no tracked flights yet. | 4,786 mi | Nonstop | 5-6/day From the current provider sample; confirm live timetables before booking. | International |
Airlines on this route
Nonstop airlines from London to Seattle
British Airways, Delta Air Lines, and Alaska Airlines operate 5-6/day flights from LHR to SEA. Departures leave from Terminals 3 and 5 at LHR.
- First departure
- 01:53
- Last departure
- 18:30
- Cadence
- ~every 2 hours
- Scheduled departure times
- 10
| Airline | Captured daily freq. | Aircraft | Departures (local) |
|---|---|---|---|
| British Airways | 2/day | Boeing 777, Boeing 787 · Terminal 5 · Seat map |
Aircraft on this route
Flying the other way?
SEA to LHR flights — 5-6/day on 4 airlines →Methodology: airline, aircraft, terminal, and departure-time details come from a full week of published airline schedules for LHR, refreshed on a rolling basis. Frequency uses 38 scheduled departures across 7 observed days; flight time is estimated from flying distance until this route has enough tracked flights for an observed average.
Route FAQ
How long is the flight from London to Seattle?
The estimated flight time from London (LHR) to Seattle (SEA) is about 10h 27m, based on the 4,786-mile flying distance.
How far is London from Seattle?
London (LHR) to Seattle (SEA) is about 4,786 miles by air.
Are there nonstop flights from London to Seattle?
Yes. British Airways, Delta Air Lines, and Alaska Airlines fly nonstop from London (LHR) to Seattle (SEA), with 5-6/day departures.
Which airlines fly from London to Seattle?
British Airways, Delta Air Lines, Alaska Airlines, and Virgin Atlantic fly nonstop from London (LHR) to Seattle (SEA).
What aircraft fly from London to Seattle?
The LHR–SEA route is flown with Airbus A330, Boeing 777, Boeing 787.
Route hubs
Nearby airport options
Near London
- LCY - LondonLondon City Airport · 22 mi from LHRFlights from LCY
- LGW - LondonLondon Gatwick Airport · 25 mi from LHRFlights from LGW
- LTN - LondonLondon Luton Airport · 28 mi from LHRFlights from LTN