Distance From Cox-Grantham Airfield to Jeju International Airport

The distance from Cox-Grantham Airfield () to Jeju International Airport (CJU) is 7423 miles or 11945 kilometers or 6446 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 Grantham ( United States ) to Jeju City ( South Korea )?

A one-way nonstop (direct) flight between Grantham and Jeju City takes around 17 hours 3 minutes.

Estimated flight time from Cox-Grantham Airfield, Grantham, United States to Jeju International Airport, Jeju City, South Korea is 17 hours 3 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		11945 km
Statute Miles		7423 miles
Nautical Miles		6446 nm
Avg. Time of Flight		17 hours 3 minutes

Cox-Grantham Airfield to Jeju International Airport Flight Route Map - to CJU Flight Path

Location of Cox-Grantham Airfield & Jeju International Airport is given below.
Click the map to view Grantham to Jeju City nonstop flight path and travel direction.

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

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

Time Difference Between the Airports • - CJU

Time difference between Grantham (United States) and Jeju City (South Korea) is 13 Hours.
Jeju City time is 13 Hours ahead of Grantham.

Location	Local Time
Grantham (United States)	2026-06-18, 03:33:48 EDT
Jeju City (South Korea)	2026-06-18, 16:33:48 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

Cox-Grantham Airfield ( / 6NC0) Grantham, United States

Destination

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