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TWF to FSI: distance & flight time
Twin Falls (Joslin Field Magic Valley Regional Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
1,021 mi
1,643 km · 887 nm
2h 41m
estimated nonstop flight time
+1h
time difference · heading southeast
See live TWF→FSI fares Phone-only fares on this route — call free
Flight time details
1,021 miles nonstop takes roughly 2h 41m 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
- TWF — Joslin Field Magic Valley Regional Airport · Twin Falls, United States
- FSI — Henry Post Army Air Field (Fort Sill) · Fort Sill, 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 FSI
- LAW · Lawton Fort Sill Regional Airport6 mi away
- DUC · Halliburton Field28 mi away
- HBR · Hobart Regional Airport44 mi away
- SPS · Sheppard Air Force Base-Wichita Falls Municipal Airport46 mi away
Frequently asked questions
How far is TWF from FSI?
The flight distance from Twin Falls (TWF) to Fort Sill (FSI) is 1,021 miles (1,643 km, 887 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from TWF to FSI?
A nonstop flight takes about 2h 41m 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 Sill?
Fort Sill is 1 hour ahead of Twin Falls.
What is the cheapest way to fly from TWF to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on TWF–FSI that never appear on search engines, with no booking fees.