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FSI to YSM: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Fort Smith (Fort Smith Airport)
1,856 mi
2,987 km · 1,613 nm
4h 6m
estimated nonstop flight time
-1h
time difference · heading north
See live FSI→YSM fares Phone-only fares on this route — call free
Flight time details
1,856 miles nonstop takes roughly 4h 6m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- FSI — Henry Post Army Air Field (Fort Sill) · Fort Sill, United States
- YSM — Fort Smith Airport · Fort Smith, Canada
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 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
Frequently asked questions
How far is FSI from YSM?
The flight distance from Fort Sill (FSI) to Fort Smith (YSM) 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 FSI to YSM?
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 Sill and Fort Smith?
Fort Smith is 1 hour behind Fort Sill.
What is the cheapest way to fly from FSI to YSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–YSM that never appear on search engines, with no booking fees.