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OSN to IIL: distance & flight time
Osan (Osan Air Base) → Ilam (Ilam Airport)
4,407 mi
7,092 km · 3,829 nm
9h 6m
estimated nonstop flight time
-5.5h
time difference · heading northwest
See live OSN→IIL fares Phone-only fares on this route — call free
Flight time details
4,407 miles nonstop takes roughly 9h 6m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5.5-hour time set-back when reading arrival times on your ticket.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- IIL — Ilam Airport · Ilam, Iran
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 IIL
- KSH · Shahid Ashrafi Esfahani Airport68 mi away
- KHD · Khoram Abad Airport109 mi away
- SDG · Sanandaj Airport120 mi away
- XQC · Joint Base Balad120 mi away
Frequently asked questions
How far is OSN from IIL?
The flight distance from Osan (OSN) to Ilam (IIL) is 4,407 miles (7,092 km, 3,829 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to IIL?
A nonstop flight takes about 9h 6m 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 Osan and Ilam?
Ilam is 5.5 hours behind Osan.
What is the cheapest way to fly from OSN to IIL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–IIL that never appear on search engines, with no booking fees.