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IKA to OSN: distance & flight time
Tehran (Imam Khomeini International Airport) → Osan (Osan Air Base)
4,108 mi
6,612 km · 3,570 nm
8h 31m
estimated nonstop flight time
+5.5h
time difference · heading northeast
See live IKA→OSN fares Phone-only fares on this route — call free
Flight time details
4,108 miles nonstop takes roughly 8h 31m 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
- IKA — Imam Khomeini International Airport · Tehran, 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 IKA
- THR · Mehrabad International Airport21 mi away
- PYK · Payam International Airport31 mi away
- GZW · Qazvin Airport84 mi away
- NSH · Noshahr Airport88 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 IKA from OSN?
The flight distance from Tehran (IKA) to Osan (OSN) is 4,108 miles (6,612 km, 3,570 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IKA to OSN?
A nonstop flight takes about 8h 31m 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 Tehran and Osan?
Osan is 5.5 hours ahead of Tehran.
What is the cheapest way to fly from IKA to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IKA–OSN that never appear on search engines, with no booking fees.