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COS to BFI: distance & flight time
Colorado Springs (City of Colorado Springs Municipal Airport) → Seattle (Boeing Field King County International Airport)
1,068 mi
1,720 km · 928 nm
2h 47m
estimated nonstop flight time
-1h
time difference · heading northwest
See live COS→BFI fares Phone-only fares on this route — call free
Flight time details
1,068 miles nonstop takes roughly 2h 47m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- COS — City of Colorado Springs Municipal Airport · Colorado Springs, United States
- 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 COS
- FCS · Butts AAF (Fort Carson) Air Field9 mi away
- DEN · Denver International Airport73 mi away
- PUB · Pueblo Memorial Airport37 mi away
- APA · Centennial Airport53 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 COS from BFI?
The flight distance from Colorado Springs (COS) to Seattle (BFI) is 1,068 miles (1,720 km, 928 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from COS to BFI?
A nonstop flight takes about 2h 47m 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 Colorado Springs and Seattle?
Seattle is 1 hour behind Colorado Springs.
What is the cheapest way to fly from COS to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on COS–BFI that never appear on search engines, with no booking fees.