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IRB to FSI: distance & flight time
Iraan (Iraan Municipal Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
329 mi
529 km · 286 nm
1h 20m
estimated nonstop flight time
Same time
time difference · heading northeast
See live IRB→FSI fares Phone-only fares on this route — call free
Flight time details
329 miles nonstop takes roughly 1h 20m gate to gate, flying northeast. 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
- IRB — Iraan Municipal Airport · Iraan, 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 IRB
- OZA · Ozona Municipal Airport43 mi away
- FST · Fort Stockton Pecos County Airport61 mi away
- MAF · Midland International Airport74 mi away
- SJT · San Angelo Regional Mathis Field88 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 IRB from FSI?
The flight distance from Iraan (IRB) to Fort Sill (FSI) is 329 miles (529 km, 286 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IRB to FSI?
A nonstop flight takes about 1h 20m 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 IRB to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IRB–FSI that never appear on search engines, with no booking fees.