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OSN to YSM: distance & flight time
Osan (Osan Air Base) → Fort Smith (Fort Smith Airport)
4,941 mi
7,952 km · 4,294 nm
10h 9m
estimated nonstop flight time
-15h
time difference · heading northeast
See live OSN→YSM fares Phone-only fares on this route — call free
Flight time details
4,941 miles nonstop takes roughly 10h 9m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time set-back when reading arrival times on your ticket.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- 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 OSN
- ICN · Incheon International Airport41 mi away
- SWU · Suwon Airport10 mi away
- SSN · Seoul Air Base (K-16)25 mi away
- GMP · Gimpo International Airport35 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 OSN from YSM?
The flight distance from Osan (OSN) to Fort Smith (YSM) is 4,941 miles (7,952 km, 4,294 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to YSM?
A nonstop flight takes about 10h 9m 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 Osan and Fort Smith?
Fort Smith is 15 hours behind Osan.
What is the cheapest way to fly from OSN to YSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–YSM that never appear on search engines, with no booking fees.