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GRF to TWF: distance & flight time
Fort Lewis (Gray Army Air Field) → Twin Falls (Joslin Field Magic Valley Regional Airport)
508 mi
817 km · 441 nm
1h 34m
estimated nonstop flight time
+1h
time difference · heading southeast
See live GRF→TWF fares Phone-only fares on this route — call free
Flight time details
508 miles nonstop takes roughly 1h 34m gate to gate, flying southeast. 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
- TWF — Joslin Field Magic Valley Regional Airport · Twin 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 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
Frequently asked questions
How far is GRF from TWF?
The flight distance from Fort Lewis (GRF) to Twin Falls (TWF) is 508 miles (817 km, 441 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRF to TWF?
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.
Are there nonstop flights from GRF to TWF?
Nonstop service on GRF–TWF depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 1h 34m nonstop estimate.
What is the time difference between Fort Lewis and Twin Falls?
Twin Falls is 1 hour ahead of Fort Lewis.
What is the cheapest way to fly from GRF to TWF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRF–TWF that never appear on search engines, with no booking fees.
Why are some GRF to TWF fares phone-only?
Consolidator contracts let us sell certain GRF–TWF tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.