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LCY to SEA: distance & flight time
London (London City Airport) → Seattle (Seattle Tacoma International Airport)
4,798 mi
7,721 km · 4,169 nm
9h 52m
estimated nonstop flight time
-8h
time difference · heading northwest
See live LCY→SEA fares Phone-only fares on this route — call free
Flight time details
4,798 miles nonstop takes roughly 9h 52m 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
- LCY — London City 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 LCY
- LHR · London Heathrow Airport22 mi away
- LGW · London Gatwick Airport27 mi away
- BQH · London Biggin Hill Airport12 mi away
- NHT · RAF Northolt21 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 LCY from SEA?
The flight distance from London (LCY) to Seattle (SEA) is 4,798 miles (7,721 km, 4,169 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from LCY to SEA?
A nonstop flight takes about 9h 52m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between London and Seattle?
Seattle is 8 hours behind London.
What is the cheapest way to fly from LCY to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on LCY–SEA that never appear on search engines, with no booking fees.