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FSI to BOI: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Boise (Boise Air Terminal/Gowen Field)
1,133 mi
1,823 km · 985 nm
2h 56m
estimated nonstop flight time
-1h
time difference · heading northwest
See live FSI→BOI fares Phone-only fares on this route — call free
Flight time details
1,133 miles nonstop takes roughly 2h 56m 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
- FSI — Henry Post Army Air Field (Fort Sill) · Fort Sill, United States
- BOI — Boise Air Terminal/Gowen Field · Boise, 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 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
Near BOI
- MUO · Mountain Home Air Force Base40 mi away
- ONO · Ontario Municipal Airport50 mi away
- MYL · McCall Municipal Airport92 mi away
- SUN · Friedman Memorial Airport97 mi away
Frequently asked questions
How far is FSI from BOI?
The flight distance from Fort Sill (FSI) to Boise (BOI) is 1,133 miles (1,823 km, 985 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to BOI?
A nonstop flight takes about 2h 56m 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 Fort Sill and Boise?
Boise is 1 hour behind Fort Sill.
What is the cheapest way to fly from FSI to BOI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–BOI that never appear on search engines, with no booking fees.