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OSN to IST: distance & flight time
Osan (Osan Air Base) → Istanbul (Istanbul Airport)
4,964 mi
7,989 km · 4,314 nm
10h 12m
estimated nonstop flight time
-6h
time difference · heading northwest
See live OSN→IST fares Phone-only fares on this route — call free
Flight time details
4,964 miles nonstop takes roughly 10h 12m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- IST — Istanbul Airport · Istanbul, Turkey
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 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
Frequently asked questions
How far is OSN from IST?
The flight distance from Osan (OSN) to Istanbul (IST) 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 OSN to IST?
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.
Are there nonstop flights from OSN to IST?
Nonstop service on OSN–IST depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 10h 12m nonstop estimate.
What is the time difference between Osan and Istanbul?
Istanbul is 6 hours behind Osan.
What is the cheapest way to fly from OSN to IST?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–IST that never appear on search engines, with no booking fees.
Why are some OSN to IST fares phone-only?
Consolidator contracts let us sell certain OSN–IST tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.