Need help booking?
Unpublished phone-only deals available
APA to BFI: distance & flight time
Denver (Centennial Airport) → Seattle (Boeing Field King County International Airport)
1,029 mi
1,656 km · 894 nm
2h 42m
estimated nonstop flight time
-1h
time difference · heading northwest
See live APA→BFI fares Phone-only fares on this route — call free
Flight time details
1,029 miles nonstop takes roughly 2h 42m 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
- APA — Centennial Airport · Denver, 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 APA
- DEN · Denver International Airport22 mi away
- BFK · Buckley Air Force Base10 mi away
- BJC · Rocky Mountain Metropolitan Airport27 mi away
- WBU · Boulder Municipal Airport38 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 APA from BFI?
The flight distance from Denver (APA) to Seattle (BFI) is 1,029 miles (1,656 km, 894 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from APA to BFI?
A nonstop flight takes about 2h 42m 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 Denver and Seattle?
Seattle is 1 hour behind Denver.
What is the cheapest way to fly from APA to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on APA–BFI that never appear on search engines, with no booking fees.