Distance From Gustavus Airport to Incheon International Airport, GST - ICN Distance

The distance from Gustavus Airport (GST) to Incheon International Airport (ICN) is 4319 miles or 6951 kilometers or 3751 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 Gustavus ( United States ) to Seoul ( South Korea )?

A one-way nonstop (direct) flight between Gustavus and Seoul takes around 9 hours 55 minutes.

Estimated flight time from Gustavus Airport, Gustavus, United States to Incheon International Airport, Seoul, South Korea is 9 hours 55 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 • GST - ICN

Kilometers		6951 km
Statute Miles		4319 miles
Nautical Miles		3751 nm
Avg. Time of Flight		9 hours 55 minutes

Gustavus Airport to Incheon International Airport Flight Route Map - GST to ICN Flight Path

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

Click to see flight route on Google Map between Gustavus, United States and Seoul, South Korea. .

Nonstop flight route between Gustavus, United States and Seoul, South Korea.

Time Difference Between the Airports • GST - ICN

Time difference between Gustavus (United States) and Seoul (South Korea) is 18 Hours.
Seoul time is 18 Hours ahead of Gustavus.

Location	Local Time
Gustavus (United States)	2025-12-14, 19:13:49 AKST
Seoul (South Korea)	2025-12-15, 13:13:49 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

Gustavus Airport (GST / PAGS) Gustavus, United States

Destination

Incheon International Airport (ICN / RKSI) Seoul, South Korea