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LYM to SEA: distance & flight time
Lympne (Lympne Airport) → Seattle (Seattle Tacoma International Airport)
4,846 mi
7,799 km · 4,211 nm
9h 58m
estimated nonstop flight time
-8h
time difference · heading northwest
See live LYM→SEA fares Phone-only fares on this route — call free
Flight time details
4,846 miles nonstop takes roughly 9h 58m 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
- LYM — Lympne Airport · Lympne, 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 LYM
- LYX · Lydd Airport9 mi away
- LGW · London Gatwick Airport52 mi away
- MSE · Kent International Airport23 mi away
- LHR · London Heathrow Airport69 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 LYM from SEA?
The flight distance from Lympne (LYM) to Seattle (SEA) is 4,846 miles (7,799 km, 4,211 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from LYM to SEA?
A nonstop flight takes about 9h 58m 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 Lympne and Seattle?
Seattle is 8 hours behind Lympne.
What is the cheapest way to fly from LYM to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on LYM–SEA that never appear on search engines, with no booking fees.