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ASR to OSN: distance & flight time
Kayseri (Kayseri Erkilet Airport) → Osan (Osan Air Base)
4,756 mi
7,655 km · 4,133 nm
9h 48m
estimated nonstop flight time
+6h
time difference · heading northeast
See live ASR→OSN fares Phone-only fares on this route — call free
Flight time details
4,756 miles nonstop takes roughly 9h 48m 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
- ASR — Kayseri Erkilet Airport · Kayseri, 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 ASR
- NAV · Nevşehir Kapadokya Airport52 mi away
- VAS · Sivas Nuri Demirağ Airport104 mi away
- TJK · Tokat Airport116 mi away
- KCM · Kahramanmaraş Airport116 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 ASR from OSN?
The flight distance from Kayseri (ASR) to Osan (OSN) is 4,756 miles (7,655 km, 4,133 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ASR to OSN?
A nonstop flight takes about 9h 48m 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 Kayseri and Osan?
Osan is 6 hours ahead of Kayseri.
What is the cheapest way to fly from ASR to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ASR–OSN that never appear on search engines, with no booking fees.