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STL to YSM: distance & flight time
St. Louis (St Louis Lambert International Airport) → Fort Smith (Fort Smith Airport)
1,744 mi
2,807 km · 1,515 nm
3h 53m
estimated nonstop flight time
-1h
time difference · heading northwest
See live STL→YSM fares Phone-only fares on this route — call free
Flight time details
1,744 miles nonstop takes roughly 3h 53m gate to gate, flying northwest. 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
- STL — St Louis Lambert International Airport · St. Louis, 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 STL
- SUS · Spirit of St Louis Airport16 mi away
- ALN · St Louis Regional Airport20 mi away
- BLV · Scott AFB/Midamerica Airport32 mi away
- SPI · Abraham Lincoln Capital Airport84 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 STL from YSM?
The flight distance from St. Louis (STL) to Fort Smith (YSM) is 1,744 miles (2,807 km, 1,515 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STL to YSM?
A nonstop flight takes about 3h 53m 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 St. Louis and Fort Smith?
Fort Smith is 1 hour behind St. Louis.
What is the cheapest way to fly from STL to YSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STL–YSM that never appear on search engines, with no booking fees.