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NST to OSN: distance & flight time
Nakhon Si Thammarat (Nakhon Si Thammarat Airport) → Osan (Osan Air Base)
2,601 mi
4,185 km · 2,260 nm
5h 34m
estimated nonstop flight time
+2h
time difference · heading northeast
See live NST→OSN fares Phone-only fares on this route — call free
Flight time details
2,601 miles nonstop takes roughly 5h 34m 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
- NST — Nakhon Si Thammarat Airport · Nakhon Si Thammarat, 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 NST
- URT · Surat Thani Airport69 mi away
- USM · Samui Airport70 mi away
- KBV · Krabi Airport72 mi away
- TST · Trang Airport75 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 NST from OSN?
The flight distance from Nakhon Si Thammarat (NST) to Osan (OSN) is 2,601 miles (4,185 km, 2,260 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from NST to OSN?
A nonstop flight takes about 5h 34m 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 Nakhon Si Thammarat and Osan?
Osan is 2 hours ahead of Nakhon Si Thammarat.
What is the cheapest way to fly from NST to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on NST–OSN that never appear on search engines, with no booking fees.