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ATY to FSI: distance & flight time
Watertown (Watertown Regional Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
712 mi
1,146 km · 619 nm
2h 1m
estimated nonstop flight time
Same time
time difference · heading south
See live ATY→FSI fares Phone-only fares on this route — call free
Flight time details
712 miles nonstop takes roughly 2h 1m 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
- ATY — Watertown Regional Airport · Watertown, 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 ATY
- HON · Huron Regional Airport64 mi away
- ABR · Aberdeen Regional Airport72 mi away
- MHE · Mitchell Municipal Airport90 mi away
- FSD · Joe Foss Field Airport94 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 ATY from FSI?
The flight distance from Watertown (ATY) to Fort Sill (FSI) is 712 miles (1,146 km, 619 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ATY to FSI?
A nonstop flight takes about 2h 1m 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 ATY to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ATY–FSI that never appear on search engines, with no booking fees.