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FSI to IAH: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Houston (George Bush Intercontinental Houston Airport)
369 mi
593 km · 320 nm
1h 26m
estimated nonstop flight time
Same time
time difference · heading southeast
See live FSI→IAH fares Phone-only fares on this route — call free
Flight time details
369 miles nonstop takes roughly 1h 26m gate to gate, flying southeast. 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
- IAH — George Bush Intercontinental Houston Airport · Houston, 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 IAH
- DWH · David Wayne Hooks Memorial Airport14 mi away
- IWS · West Houston Airport23 mi away
- AAP · Andrau Airpark23 mi away
- HOU · William P Hobby Airport24 mi away
Frequently asked questions
How far is FSI from IAH?
The flight distance from Fort Sill (FSI) to Houston (IAH) is 369 miles (593 km, 320 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to IAH?
A nonstop flight takes about 1h 26m 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 IAH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–IAH that never appear on search engines, with no booking fees.