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LGW to SEA: distance & flight time
London (London Gatwick Airport) → Seattle (Seattle Tacoma International Airport)
4,811 mi
7,742 km · 4,180 nm
9h 54m
estimated nonstop flight time
-8h
time difference · heading northwest
See live LGW→SEA fares Phone-only fares on this route — call free
Flight time details
4,811 miles nonstop takes roughly 9h 54m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time set-back when reading arrival times on your ticket.
The two airports
- LGW — London Gatwick Airport · London, United Kingdom
- SEA — Seattle Tacoma International Airport · Seattle, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near LGW
- LHR · London Heathrow Airport25 mi away
- KRH · Redhill Aerodrome5 mi away
- BQH · London Biggin Hill Airport16 mi away
- ESH · Shoreham Airport22 mi away
Near SEA
- RNT · Renton Municipal Airport5 mi away
- BFI · Boeing Field King County International Airport6 mi away
- TIW · Tacoma Narrows Airport18 mi away
- PWT · Bremerton National Airport21 mi away
Frequently asked questions
How far is LGW from SEA?
The flight distance from London (LGW) to Seattle (SEA) is 4,811 miles (7,742 km, 4,180 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from LGW to SEA?
A nonstop flight takes about 9h 54m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from LGW to SEA?
Nonstop service on LGW–SEA depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 9h 54m nonstop estimate.
What is the time difference between London and Seattle?
Seattle is 8 hours behind London.
What is the cheapest way to fly from LGW to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on LGW–SEA that never appear on search engines, with no booking fees.
Why are some LGW to SEA fares phone-only?
Consolidator contracts let us sell certain LGW–SEA tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.