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LAI to SEA: distance & flight time
Lannion (Lannion-Côte de Granit Airport) → Seattle (Seattle Tacoma International Airport)
4,850 mi
7,805 km · 4,214 nm
9h 59m
estimated nonstop flight time
-9h
time difference · heading northwest
See live LAI→SEA fares Phone-only fares on this route — call free
Flight time details
4,850 miles nonstop takes roughly 9h 59m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time set-back when reading arrival times on your ticket.
The two airports
- LAI — Lannion-Côte de Granit Airport · Lannion, France
- 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 LAI
- MXN · Morlaix-Ploujean Airport19 mi away
- SBK · Saint-Brieuc-Armor Airport32 mi away
- LDV · Landivisiau Air Base35 mi away
- BES · Brest Bretagne Airport48 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 LAI from SEA?
The flight distance from Lannion (LAI) to Seattle (SEA) is 4,850 miles (7,805 km, 4,214 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from LAI to SEA?
A nonstop flight takes about 9h 59m 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 Lannion and Seattle?
Seattle is 9 hours behind Lannion.
What is the cheapest way to fly from LAI to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on LAI–SEA that never appear on search engines, with no booking fees.