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IST to OSN: distance & flight time
Istanbul (Istanbul Airport) → Osan (Osan Air Base)
4,964 mi
7,989 km · 4,314 nm
10h 12m
estimated nonstop flight time
+6h
time difference · heading northeast
See live IST→OSN fares Phone-only fares on this route — call free
Flight time details
4,964 miles nonstop takes roughly 10h 12m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time gain when reading arrival times on your ticket.
The two airports
- IST — Istanbul Airport · Istanbul, Turkey
- 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 IST
- ISL · Atatürk International Airport21 mi away
- SAW · Sabiha Gökçen International Airport39 mi away
- TEQ · Tekirdağ Çorlu Airport44 mi away
- BTZ · Bursa Airport73 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 IST from OSN?
The flight distance from Istanbul (IST) to Osan (OSN) is 4,964 miles (7,989 km, 4,314 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IST to OSN?
A nonstop flight takes about 10h 12m 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 Istanbul and Osan?
Osan is 6 hours ahead of Istanbul.
What is the cheapest way to fly from IST to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IST–OSN that never appear on search engines, with no booking fees.