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SEA to LCY: distance & flight time
Seattle (Seattle Tacoma International Airport) → London (London City Airport)
4,798 mi
7,721 km · 4,169 nm
9h 52m
estimated nonstop flight time
+8h
time difference · heading northeast
See live SEA→LCY fares Phone-only fares on this route — call free
Flight time details
4,798 miles nonstop takes roughly 9h 52m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time gain when reading arrival times on your ticket.
The two airports
- SEA — Seattle Tacoma International Airport · Seattle, United States
- LCY — London City Airport · London, United Kingdom
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 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
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
Frequently asked questions
How far is SEA from LCY?
The flight distance from Seattle (SEA) to London (LCY) 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 SEA to LCY?
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 Seattle and London?
London is 8 hours ahead of Seattle.
What is the cheapest way to fly from SEA to LCY?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEA–LCY that never appear on search engines, with no booking fees.