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GRF to GTF: distance & flight time
Fort Lewis (Gray Army Air Field) → Great Falls (Great Falls International Airport)
526 mi
846 km · 457 nm
1h 37m
estimated nonstop flight time
+1h
time difference · heading east
See live GRF→GTF fares Phone-only fares on this route — call free
Flight time details
526 miles nonstop takes roughly 1h 37m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- GRF — Gray Army Air Field · Fort Lewis, 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 GRF
- SEA · Seattle Tacoma International Airport29 mi away
- TCM · McChord Air Force Base6 mi away
- TIW · Tacoma Narrows Airport13 mi away
- OLM · Olympia Regional Airport17 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 GRF from GTF?
The flight distance from Fort Lewis (GRF) to Great Falls (GTF) is 526 miles (846 km, 457 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRF to GTF?
A nonstop flight takes about 1h 37m 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 Fort Lewis and Great Falls?
Great Falls is 1 hour ahead of Fort Lewis.
What is the cheapest way to fly from GRF to GTF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRF–GTF that never appear on search engines, with no booking fees.