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PSM to GTF: distance & flight time
Portsmouth (Portsmouth International at Pease Airport) → Great Falls (Great Falls International Airport)
1,972 mi
3,173 km · 1,713 nm
4h 20m
estimated nonstop flight time
-2h
time difference · heading northwest
See live PSM→GTF fares Phone-only fares on this route — call free
Flight time details
1,972 miles nonstop takes roughly 4h 20m 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
- PSM — Portsmouth International at Pease Airport · Portsmouth, 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 PSM
- BOS · General Edward Lawrence Logan International Airport50 mi away
- LWM · Lawrence Municipal Airport29 mi away
- MHT · Manchester-Boston Regional Airport33 mi away
- BVY · Beverly Municipal Airport34 mi away
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 PSM from GTF?
The flight distance from Portsmouth (PSM) to Great Falls (GTF) is 1,972 miles (3,173 km, 1,713 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PSM to GTF?
A nonstop flight takes about 4h 20m 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 Portsmouth and Great Falls?
Great Falls is 2 hours behind Portsmouth.
What is the cheapest way to fly from PSM to GTF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PSM–GTF that never appear on search engines, with no booking fees.