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YSM to FSI: distance & flight time
Fort Smith (Fort Smith Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
1,856 mi
2,987 km · 1,613 nm
4h 6m
estimated nonstop flight time
+1h
time difference · heading southeast
See live YSM→FSI fares Phone-only fares on this route — call free
Flight time details
1,856 miles nonstop takes roughly 4h 6m 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
- YSM — Fort Smith Airport · Fort Smith, Canada
- 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 YSM
- YPY · Fort Chipewyan Airport92 mi away
- YFR · Fort Resolution Airport99 mi away
- YBE · Uranium City Airport125 mi away
- YHY · Hay River / Merlyn Carter Airport142 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 YSM from FSI?
The flight distance from Fort Smith (YSM) to Fort Sill (FSI) is 1,856 miles (2,987 km, 1,613 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YSM to FSI?
A nonstop flight takes about 4h 6m 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 Fort Smith and Fort Sill?
Fort Sill is 1 hour ahead of Fort Smith.
What is the cheapest way to fly from YSM to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YSM–FSI that never appear on search engines, with no booking fees.