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GRF to HLN: distance & flight time
Fort Lewis (Gray Army Air Field) → Helena (Helena Regional Airport)
502 mi
807 km · 436 nm
1h 33m
estimated nonstop flight time
+1h
time difference · heading east
See live GRF→HLN fares Phone-only fares on this route — call free
Flight time details
502 miles nonstop takes roughly 1h 33m 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
- HLN — Helena Regional Airport · Helena, 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 HLN
- BTM · Bert Mooney Airport51 mi away
- GTF · Great Falls International Airport67 mi away
- BZN · Gallatin Field70 mi away
- LVM · Mission Field97 mi away
Frequently asked questions
How far is GRF from HLN?
The flight distance from Fort Lewis (GRF) to Helena (HLN) is 502 miles (807 km, 436 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRF to HLN?
A nonstop flight takes about 1h 33m 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 Helena?
Helena is 1 hour ahead of Fort Lewis.
What is the cheapest way to fly from GRF to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRF–HLN that never appear on search engines, with no booking fees.