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FSI to FSD: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Sioux Falls (Joe Foss Field Airport)
624 mi
1,003 km · 542 nm
1h 49m
estimated nonstop flight time
Same time
time difference · heading north
See live FSI→FSD fares Phone-only fares on this route — call free
Flight time details
624 miles nonstop takes roughly 1h 49m gate to gate, flying north. 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
- FSD — Joe Foss Field Airport · Sioux Falls, 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 FSD
- YKN · Chan Gurney Municipal Airport56 mi away
- MHE · Mitchell Municipal Airport66 mi away
- SPW · Spencer Municipal Airport82 mi away
- SUX · Sioux Gateway Col. Bud Day Field83 mi away
Frequently asked questions
How far is FSI from FSD?
The flight distance from Fort Sill (FSI) to Sioux Falls (FSD) is 624 miles (1,003 km, 542 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to FSD?
A nonstop flight takes about 1h 49m 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 FSD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–FSD that never appear on search engines, with no booking fees.