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DSM to FSI: distance & flight time
Des Moines (Des Moines International Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
541 mi
870 km · 470 nm
1h 39m
estimated nonstop flight time
Same time
time difference · heading southwest
See live DSM→FSI fares Phone-only fares on this route — call free
Flight time details
541 miles nonstop takes roughly 1h 39m gate to gate, flying southwest. 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
- DSM — Des Moines International Airport · Des Moines, 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 DSM
- OTM · Ottumwa Regional Airport70 mi away
- FOD · Fort Dodge Regional Airport75 mi away
- ALO · Waterloo Regional Airport96 mi away
- CID · The Eastern Iowa Airport104 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 DSM from FSI?
The flight distance from Des Moines (DSM) to Fort Sill (FSI) is 541 miles (870 km, 470 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DSM to FSI?
A nonstop flight takes about 1h 39m 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 DSM to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DSM–FSI that never appear on search engines, with no booking fees.