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CNX to OSN: distance & flight time
Chiang Mai (Chiang Mai International Airport) → Osan (Osan Air Base)
2,116 mi
3,406 km · 1,839 nm
4h 37m
estimated nonstop flight time
+2h
time difference · heading northeast
See live CNX→OSN fares Phone-only fares on this route — call free
Flight time details
2,116 miles nonstop takes roughly 4h 37m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- CNX — Chiang Mai International Airport · Chiang Mai, Thailand
- OSN — Osan Air Base · Osan, South Korea
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 CNX
- LPT · Lampang Airport49 mi away
- PYY · Mae Hong Son Airport54 mi away
- HGN · Mae Hong Son Airport74 mi away
- PRH · Phrae Airport90 mi away
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
Frequently asked questions
How far is CNX from OSN?
The flight distance from Chiang Mai (CNX) to Osan (OSN) is 2,116 miles (3,406 km, 1,839 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CNX to OSN?
A nonstop flight takes about 4h 37m 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 Chiang Mai and Osan?
Osan is 2 hours ahead of Chiang Mai.
What is the cheapest way to fly from CNX to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CNX–OSN that never appear on search engines, with no booking fees.