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FCA to FSI: distance & flight time
Kalispell (Glacier Park International Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
1,246 mi
2,005 km · 1,082 nm
3h 10m
estimated nonstop flight time
+1h
time difference · heading southeast
See live FCA→FSI fares Phone-only fares on this route — call free
Flight time details
1,246 miles nonstop takes roughly 3h 10m 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
- FCA — Glacier Park International Airport · Kalispell, 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 FCA
- WPC · Pincher Creek Airport84 mi away
- CTB · Cut Bank International Airport89 mi away
- MSO · Missoula International Airport97 mi away
- YQL · Lethbridge County Airport113 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 FCA from FSI?
The flight distance from Kalispell (FCA) to Fort Sill (FSI) is 1,246 miles (2,005 km, 1,082 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FCA to FSI?
A nonstop flight takes about 3h 10m 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 Kalispell and Fort Sill?
Fort Sill is 1 hour ahead of Kalispell.
What is the cheapest way to fly from FCA to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FCA–FSI that never appear on search engines, with no booking fees.