Distance From Grayrock Ridge Heliport to Jeju International Airport

The distance from Grayrock Ridge Heliport () to Jeju International Airport (CJU) is 7101 miles or 11427 kilometers or 6166 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 Cumberland ( United States ) to Jeju City ( South Korea )?

A one-way nonstop (direct) flight between Cumberland and Jeju City takes around 16 hours 19 minutes.

Estimated flight time from Grayrock Ridge Heliport, Cumberland, United States to Jeju International Airport, Jeju City, South Korea is 16 hours 19 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 • - CJU

Kilometers		11427 km
Statute Miles		7101 miles
Nautical Miles		6166 nm
Avg. Time of Flight		16 hours 19 minutes

Grayrock Ridge Heliport to Jeju International Airport Flight Route Map - to CJU Flight Path

Location of Grayrock Ridge Heliport & Jeju International Airport is given below.
Click the map to view Cumberland to Jeju City nonstop flight path and travel direction.

Click to see flight route on Google Map between Cumberland, United States and Jeju City, South Korea. .

Nonstop flight route between Cumberland, United States and Jeju City, South Korea.

Time Difference Between the Airports • - CJU

Time difference between Cumberland (United States) and Jeju City (South Korea) is 14 Hours.
Jeju City time is 14 Hours ahead of Cumberland.

Location	Local Time
Cumberland (United States)	2025-12-14, 11:40:20 EST
Jeju City (South Korea)	2025-12-15, 01:40:20 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

Grayrock Ridge Heliport ( / RI02) Cumberland, United States

Destination

Jeju International Airport (CJU / RKPC) Jeju City, South Korea