Need help booking?
Unpublished phone-only deals available
GTF to APA: distance & flight time
Great Falls (Great Falls International Airport) → Denver (Centennial Airport)
636 mi
1,024 km · 553 nm
1h 51m
estimated nonstop flight time
Same time
time difference · heading southeast
See live GTF→APA fares Phone-only fares on this route — call free
Flight time details
636 miles nonstop takes roughly 1h 51m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- GTF — Great Falls International Airport · Great Falls, United States
- APA — Centennial Airport · Denver, 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 GTF
- HLN · Helena Regional Airport67 mi away
- CTB · Cut Bank International Airport91 mi away
- LWT · Lewistown Municipal Airport94 mi away
- HVR · Havre City County Airport104 mi away
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
Frequently asked questions
How far is GTF from APA?
The flight distance from Great Falls (GTF) to Denver (APA) is 636 miles (1,024 km, 553 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GTF to APA?
A nonstop flight takes about 1h 51m 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 cheapest way to fly from GTF to APA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GTF–APA that never appear on search engines, with no booking fees.