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GRK to FSI: distance & flight time
Killeen (Robert Gray Army Air Field Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
250 mi
402 km · 217 nm
1h 7m
estimated nonstop flight time
Same time
time difference · heading north
See live GRK→FSI fares Phone-only fares on this route — call free
Flight time details
250 miles nonstop takes roughly 1h 7m 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
- GRK — Robert Gray Army Air Field Airport · Killeen, 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 GRK
- HLR · Hood Army Air Field8 mi away
- AUS · Austin Bergstrom International Airport61 mi away
- TPL · Draughon Miller Central Texas Regional Airport26 mi away
- ACT · Waco Regional Airport52 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 GRK from FSI?
The flight distance from Killeen (GRK) to Fort Sill (FSI) is 250 miles (402 km, 217 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRK to FSI?
A nonstop flight takes about 1h 7m 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 GRK to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRK–FSI that never appear on search engines, with no booking fees.