Need help booking?
Unpublished phone-only deals available
DUC to GTF: distance & flight time
Duncan (Halliburton Field) → Great Falls (Great Falls International Airport)
1,136 mi
1,828 km · 987 nm
2h 56m
estimated nonstop flight time
-1h
time difference · heading northwest
See live DUC→GTF fares Phone-only fares on this route — call free
Flight time details
1,136 miles nonstop takes roughly 2h 56m 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
- DUC — Halliburton Field · Duncan, United States
- GTF — Great Falls International Airport · Great Falls, 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 DUC
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
Frequently asked questions
How far is DUC from GTF?
The flight distance from Duncan (DUC) to Great Falls (GTF) is 1,136 miles (1,828 km, 987 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DUC to GTF?
A nonstop flight takes about 2h 56m 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 Duncan and Great Falls?
Great Falls is 1 hour behind Duncan.
What is the cheapest way to fly from DUC to GTF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DUC–GTF that never appear on search engines, with no booking fees.