Need help booking?
Unpublished phone-only deals available
KKS to OSN: distance & flight time
Kashan (Kashan Airport) → Osan (Osan Air Base)
4,134 mi
6,652 km · 3,592 nm
8h 34m
estimated nonstop flight time
+5.5h
time difference · heading northeast
See live KKS→OSN fares Phone-only fares on this route — call free
Flight time details
4,134 miles nonstop takes roughly 8h 34m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5.5-hour time gain when reading arrival times on your ticket.
The two airports
- KKS — Kashan Airport · Kashan, Iran
- 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 KKS
- IFH · Hesa Airport67 mi away
- IFN · Esfahan Shahid Beheshti International Airport81 mi away
- AJK · Arak Airport100 mi away
- IKA · Imam Khomeini International Airport108 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 KKS from OSN?
The flight distance from Kashan (KKS) to Osan (OSN) is 4,134 miles (6,652 km, 3,592 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KKS to OSN?
A nonstop flight takes about 8h 34m 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 Kashan and Osan?
Osan is 5.5 hours ahead of Kashan.
What is the cheapest way to fly from KKS to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KKS–OSN that never appear on search engines, with no booking fees.