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DUC to FSI: distance & flight time
Duncan (Halliburton Field) → Fort Sill (Henry Post Army Air Field (Fort Sill))
28 mi
45 km · 24 nm
32m
estimated nonstop flight time
Same time
time difference · heading northwest
See live DUC→FSI fares Phone-only fares on this route — call free
Flight time details
28 miles nonstop takes roughly 32m 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
- DUC — Halliburton Field · Duncan, 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 DUC
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 DUC from FSI?
The flight distance from Duncan (DUC) to Fort Sill (FSI) is 28 miles (45 km, 24 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DUC to FSI?
A nonstop flight takes about 32m 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 DUC to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DUC–FSI that never appear on search engines, with no booking fees.