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Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HLN–GRF that never appear on search engines, with no booking fees.