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IDA to GRF: distance & flight time
Idaho Falls (Idaho Falls Regional Airport) → Fort Lewis (Gray Army Air Field)
566 mi
912 km · 492 nm
1h 42m
estimated nonstop flight time
-1h
time difference · heading northwest
See live IDA→GRF fares Phone-only fares on this route — call free
Flight time details
566 miles nonstop takes roughly 1h 42m gate to gate, flying northwest. 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
- IDA — Idaho Falls Regional Airport · Idaho Falls, 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 IDA
- PIH · Pocatello Regional Airport49 mi away
- JAC · Jackson Hole Airport67 mi away
- WYS · Yellowstone Airport94 mi away
- BYI · Burley Municipal Airport109 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 IDA from GRF?
The flight distance from Idaho Falls (IDA) to Fort Lewis (GRF) is 566 miles (912 km, 492 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IDA to GRF?
A nonstop flight takes about 1h 42m 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 Idaho Falls and Fort Lewis?
Fort Lewis is 1 hour behind Idaho Falls.
What is the cheapest way to fly from IDA to GRF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IDA–GRF that never appear on search engines, with no booking fees.