Need help booking?
Unpublished phone-only deals available
ICN to THR: distance & flight time
Seoul (Incheon International Airport) → Teheran (Mehrabad International Airport)
4,052 mi
6,522 km · 3,521 nm
8h 25m
estimated nonstop flight time
-5.5h
time difference · heading northwest
See live ICN→THR fares Phone-only fares on this route — call free
Flight time details
4,052 miles nonstop takes roughly 8h 25m 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
- ICN — Incheon International Airport · Seoul, South Korea
- THR — Mehrabad International Airport · Teheran, 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 ICN
- GMP · Gimpo International Airport20 mi away
- SWU · Suwon Airport34 mi away
- SSN · Seoul Air Base (K-16)36 mi away
- OSN · Osan Air Base41 mi away
Near THR
- IKA · Imam Khomeini International Airport21 mi away
- PYK · Payam International Airport28 mi away
- NSH · Noshahr Airport68 mi away
- GZW · Qazvin Airport80 mi away
Frequently asked questions
How far is ICN from THR?
The flight distance from Seoul (ICN) to Teheran (THR) is 4,052 miles (6,522 km, 3,521 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ICN to THR?
A nonstop flight takes about 8h 25m 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 Seoul and Teheran?
Teheran is 5.5 hours behind Seoul.
What is the cheapest way to fly from ICN to THR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ICN–THR that never appear on search engines, with no booking fees.