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WYS to FSI: distance & flight time
West Yellowstone (Yellowstone Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
966 mi
1,555 km · 840 nm
2h 34m
estimated nonstop flight time
+1h
time difference · heading southeast
See live WYS→FSI fares Phone-only fares on this route — call free
Flight time details
966 miles nonstop takes roughly 2h 34m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- WYS — Yellowstone Airport · West Yellowstone, 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 WYS
- BZN · Gallatin Field75 mi away
- JAC · Jackson Hole Airport77 mi away
- LVM · Mission Field77 mi away
- IDA · Idaho Falls Regional 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 WYS from FSI?
The flight distance from West Yellowstone (WYS) to Fort Sill (FSI) is 966 miles (1,555 km, 840 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from WYS to FSI?
A nonstop flight takes about 2h 34m 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 time difference between West Yellowstone and Fort Sill?
Fort Sill is 1 hour ahead of West Yellowstone.
What is the cheapest way to fly from WYS to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on WYS–FSI that never appear on search engines, with no booking fees.