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FSI to AUS: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Austin (Austin Bergstrom International Airport)
311 mi
500 km · 270 nm
1h 17m
estimated nonstop flight time
Same time
time difference · heading south
See live FSI→AUS fares Phone-only fares on this route — call free
Flight time details
311 miles nonstop takes roughly 1h 17m gate to gate, flying south. 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
- AUS — Austin Bergstrom International Airport · Austin, 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 AUS
- RND · Randolph Air Force Base59 mi away
- GRK · Robert Gray Army Air Field Airport61 mi away
- HLR · Hood Army Air Field65 mi away
- SAT · San Antonio International Airport66 mi away
Frequently asked questions
How far is FSI from AUS?
The flight distance from Fort Sill (FSI) to Austin (AUS) is 311 miles (500 km, 270 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to AUS?
A nonstop flight takes about 1h 17m 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 AUS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–AUS that never appear on search engines, with no booking fees.