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TWF to GRF: distance & flight time
Twin Falls (Joslin Field Magic Valley Regional Airport) → Fort Lewis (Gray Army Air Field)
508 mi
817 km · 441 nm
1h 34m
estimated nonstop flight time
-1h
time difference · heading northwest
See live TWF→GRF fares Phone-only fares on this route — call free
Flight time details
508 miles nonstop takes roughly 1h 34m 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
- TWF — Joslin Field Magic Valley Regional Airport · Twin 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 TWF
- BYI · Burley Municipal Airport37 mi away
- SUN · Friedman Memorial Airport71 mi away
- MUO · Mountain Home Air Force Base80 mi away
- PIH · Pocatello Regional Airport101 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 TWF from GRF?
The flight distance from Twin Falls (TWF) to Fort Lewis (GRF) is 508 miles (817 km, 441 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from TWF to GRF?
A nonstop flight takes about 1h 34m 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 Twin Falls and Fort Lewis?
Fort Lewis is 1 hour behind Twin Falls.
What is the cheapest way to fly from TWF to GRF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on TWF–GRF that never appear on search engines, with no booking fees.