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THS to OSN: distance & flight time
Sukhothai (Sukhothai Airport) → Osan (Osan Air Base)
2,149 mi
3,458 km · 1,867 nm
4h 41m
estimated nonstop flight time
+2h
time difference · heading northeast
See live THS→OSN fares Phone-only fares on this route — call free
Flight time details
2,149 miles nonstop takes roughly 4h 41m 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
- THS — Sukhothai Airport · Sukhothai, 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 THS
- PHS · Phitsanulok Airport44 mi away
- TKT · Tak Airport44 mi away
- PRH · Phrae Airport66 mi away
- LPT · Lampang Airport74 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 THS from OSN?
The flight distance from Sukhothai (THS) to Osan (OSN) is 2,149 miles (3,458 km, 1,867 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from THS to OSN?
A nonstop flight takes about 4h 41m 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 Sukhothai and Osan?
Osan is 2 hours ahead of Sukhothai.
What is the cheapest way to fly from THS to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on THS–OSN that never appear on search engines, with no booking fees.