Need help booking?
Unpublished phone-only deals available
FSI to CSM: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Clinton (Clinton Sherman Airport)
66 mi
106 km · 57 nm
38m
estimated nonstop flight time
Same time
time difference · heading northwest
See live FSI→CSM fares Phone-only fares on this route — call free
Flight time details
66 miles nonstop takes roughly 38m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- FSI — Henry Post Army Air Field (Fort Sill) · Fort Sill, United States
- CSM — Clinton Sherman Airport · Clinton, 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 CSM
- HBR · Hobart Regional Airport26 mi away
- LTS · Altus Air Force Base47 mi away
- FSI · Henry Post Army Air Field (Fort Sill)66 mi away
- LAW · Lawton Fort Sill Regional Airport69 mi away
Frequently asked questions
How far is FSI from CSM?
The flight distance from Fort Sill (FSI) to Clinton (CSM) is 66 miles (106 km, 57 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to CSM?
A nonstop flight takes about 38m 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 cheapest way to fly from FSI to CSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–CSM that never appear on search engines, with no booking fees.