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OSN to KOP: distance & flight time
Osan (Osan Air Base) → Nakhon Phanom (Nakhon Phanom Airport)
1,925 mi
3,098 km · 1,673 nm
4h 14m
estimated nonstop flight time
-2h
time difference · heading southwest
See live OSN→KOP fares Phone-only fares on this route — call free
Flight time details
1,925 miles nonstop takes roughly 4h 14m 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
- KOP — Nakhon Phanom Airport · Nakhon Phanom, 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 KOP
- SNO · Sakon Nakhon Airport37 mi away
- ZVK · Savannakhet Airport58 mi away
- ROI · Roi Et Airport105 mi away
- VII · Vinh Airport115 mi away
Frequently asked questions
How far is OSN from KOP?
The flight distance from Osan (OSN) to Nakhon Phanom (KOP) is 1,925 miles (3,098 km, 1,673 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to KOP?
A nonstop flight takes about 4h 14m 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 Nakhon Phanom?
Nakhon Phanom is 2 hours behind Osan.
What is the cheapest way to fly from OSN to KOP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–KOP that never appear on search engines, with no booking fees.