Distance From Semnan Municipal Airport to Gimpo International Airport, SNX - GMP Distance

The distance from Semnan Municipal Airport (SNX) to Gimpo International Airport (GMP) is 3960 miles or 6373 kilometers or 3439 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Semnan ( Iran ) to Seoul ( South Korea )?

A one-way nonstop (direct) flight between Semnan and Seoul takes around 9 hours 6 minutes.

Estimated flight time from Semnan Municipal Airport, Semnan, Iran to Gimpo International Airport, Seoul, South Korea is 9 hours 6 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • SNX - GMP

Kilometers		6373 km
Statute Miles		3960 miles
Nautical Miles		3439 nm
Avg. Time of Flight		9 hours 6 minutes

Semnan Municipal Airport to Gimpo International Airport Flight Route Map - SNX to GMP Flight Path

Location of Semnan Municipal Airport & Gimpo International Airport is given below.
Click the map to view Semnan to Seoul nonstop flight path and travel direction.

Click to see flight route on Google Map between Semnan, Iran and Seoul, South Korea. .

Nonstop flight route between Semnan, Iran and Seoul, South Korea.

Time Difference Between the Airports • SNX - GMP

Time difference between Semnan (Iran) and Seoul (South Korea) is 5 Hours 30 Minutes.
Seoul time is 5 Hours 30 Minutes ahead of Semnan.

Location	Local Time
Semnan (Iran)	2026-09-13, 16:29:52 +0330
Seoul (South Korea)	2026-09-13, 21:59:52 KST

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Semnan Municipal Airport (SNX / OIIS) Semnan, Iran

Destination

Gimpo International Airport (GMP / RKSS) Seoul, South Korea