Need help booking?
Unpublished phone-only deals available
CQF to BFI: distance & flight time
Calais (Calais-Dunkerque Airport) → Seattle (Boeing Field King County International Airport)
4,872 mi
7,841 km · 4,234 nm
10h 1m
estimated nonstop flight time
-9h
time difference · heading northwest
See live CQF→BFI fares Phone-only fares on this route — call free
Flight time details
4,872 miles nonstop takes roughly 10h 1m 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
- CQF — Calais-Dunkerque Airport · Calais, France
- BFI — Boeing Field King County 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 CQF
- LTQ · Le Touquet-Côte d'Opale Airport34 mi away
- MSE · Kent International Airport37 mi away
- HZB · Merville-Calonne Airport38 mi away
- LYM · Lympne Airport42 mi away
Near BFI
- SEA · Seattle Tacoma International Airport6 mi away
- RNT · Renton Municipal Airport5 mi away
- PWT · Bremerton National Airport22 mi away
- TIW · Tacoma Narrows Airport22 mi away
Frequently asked questions
How far is CQF from BFI?
The flight distance from Calais (CQF) to Seattle (BFI) is 4,872 miles (7,841 km, 4,234 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CQF to BFI?
A nonstop flight takes about 10h 1m 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 Calais and Seattle?
Seattle is 9 hours behind Calais.
What is the cheapest way to fly from CQF to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CQF–BFI that never appear on search engines, with no booking fees.