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OSN to UNN: distance & flight time
Osan (Osan Air Base) → Ranong (Ranong Airport)
2,589 mi
4,167 km · 2,250 nm
5h 33m
estimated nonstop flight time
-2h
time difference · heading southwest
See live OSN→UNN fares Phone-only fares on this route — call free
Flight time details
2,589 miles nonstop takes roughly 5h 33m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- UNN — Ranong Airport · Ranong, 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 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 UNN
- KAW · Kawthoung Airport19 mi away
- URT · Surat Thani Airport58 mi away
- CJM · Chumphon Airport83 mi away
- VBP · Bokpyinn Airport95 mi away
Frequently asked questions
How far is OSN from UNN?
The flight distance from Osan (OSN) to Ranong (UNN) is 2,589 miles (4,167 km, 2,250 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to UNN?
A nonstop flight takes about 5h 33m 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 Ranong?
Ranong is 2 hours behind Osan.
What is the cheapest way to fly from OSN to UNN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–UNN that never appear on search engines, with no booking fees.