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YST to YSM: distance & flight time
St. Theresa Point (St. Theresa Point Airport) → Fort Smith (Fort Smith Airport)
770 mi
1,239 km · 669 nm
2h 8m
estimated nonstop flight time
-1h
time difference · heading northwest
See live YST→YSM fares Phone-only fares on this route — call free
Flight time details
770 miles nonstop takes roughly 2h 8m 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
- YST — St. Theresa Point Airport · St. Theresa Point, Canada
- 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 YST
- YIV · Island Lake Airport8 mi away
- YGO · Gods Lake Narrows Airport51 mi away
- YRS · Red Sucker Lake Airport57 mi away
- ZGI · Gods River Airport75 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 YST from YSM?
The flight distance from St. Theresa Point (YST) to Fort Smith (YSM) is 770 miles (1,239 km, 669 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YST to YSM?
A nonstop flight takes about 2h 8m 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. Theresa Point and Fort Smith?
Fort Smith is 1 hour behind St. Theresa Point.
What is the cheapest way to fly from YST to YSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YST–YSM that never appear on search engines, with no booking fees.