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YSM to UTH: distance & flight time
Fort Smith (Fort Smith Airport) → Udon Thani (Udon Thani Airport)
6,746 mi
10,857 km · 5,862 nm
13h 42m
estimated nonstop flight time
+13h
time difference · heading northwest
See live YSM→UTH fares Phone-only fares on this route — call free
Flight time details
6,746 miles nonstop takes roughly 13h 42m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time gain when reading arrival times on your ticket.
The two airports
- YSM — Fort Smith Airport · Fort Smith, Canada
- UTH — Udon Thani Airport · Udon Thani, Thailand
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 UTH
- VTE · Wattay International Airport44 mi away
- KKC · Khon Kaen Airport64 mi away
- LOE · Loei Airport70 mi away
- SNO · Sakon Nakhon Airport89 mi away
Frequently asked questions
How far is YSM from UTH?
The flight distance from Fort Smith (YSM) to Udon Thani (UTH) is 6,746 miles (10,857 km, 5,862 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YSM to UTH?
A nonstop flight takes about 13h 42m 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 Udon Thani?
Udon Thani is 13 hours ahead of Fort Smith.
What is the cheapest way to fly from YSM to UTH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YSM–UTH that never appear on search engines, with no booking fees.