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PHN to GTF: distance & flight time
Port Huron (St Clair County International Airport) → Great Falls (Great Falls International Airport)
1,431 mi
2,302 km · 1,243 nm
3h 35m
estimated nonstop flight time
-2h
time difference · heading northwest
See live PHN→GTF fares Phone-only fares on this route — call free
Flight time details
1,431 miles nonstop takes roughly 3h 35m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- PHN — St Clair County International Airport · Port Huron, 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 PHN
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 PHN from GTF?
The flight distance from Port Huron (PHN) to Great Falls (GTF) is 1,431 miles (2,302 km, 1,243 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PHN to GTF?
A nonstop flight takes about 3h 35m 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 Port Huron and Great Falls?
Great Falls is 2 hours behind Port Huron.
What is the cheapest way to fly from PHN to GTF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PHN–GTF that never appear on search engines, with no booking fees.