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SAT to FSI: distance & flight time
San Antonio (San Antonio International Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
354 mi
569 km · 307 nm
1h 24m
estimated nonstop flight time
Same time
time difference · heading north
See live SAT→FSI fares Phone-only fares on this route — call free
Flight time details
354 miles nonstop takes roughly 1h 24m 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
- SAT — San Antonio International Airport · San Antonio, 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 SAT
- RND · Randolph Air Force Base11 mi away
- SKF · Lackland Air Force Base12 mi away
- SSF · Stinson Municipal Airport14 mi away
- AUS · Austin Bergstrom International Airport66 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 SAT from FSI?
The flight distance from San Antonio (SAT) to Fort Sill (FSI) is 354 miles (569 km, 307 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SAT to FSI?
A nonstop flight takes about 1h 24m 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 SAT to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SAT–FSI that never appear on search engines, with no booking fees.