Distance From Castle Airport to Jeju International Airport, MER - CJU Distance

The distance from Castle Airport (MER) to Jeju International Airport (CJU) is 5914 miles or 9517 kilometers or 5135 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 Merced ( United States ) to Jeju City ( South Korea )?

A one-way nonstop (direct) flight between Merced and Jeju City takes around 13 hours 35 minutes.

Estimated flight time from Castle Airport, Merced, United States to Jeju International Airport, Jeju City, South Korea is 13 hours 35 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 • MER - CJU

Kilometers		9517 km
Statute Miles		5914 miles
Nautical Miles		5135 nm
Avg. Time of Flight		13 hours 35 minutes

Castle Airport to Jeju International Airport Flight Route Map - MER to CJU Flight Path

Location of Castle Airport & Jeju International Airport is given below.
Click the map to view Merced to Jeju City nonstop flight path and travel direction.

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

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

Time Difference Between the Airports • MER - CJU

Time difference between Merced (United States) and Jeju City (South Korea) is 17 Hours.
Jeju City time is 17 Hours ahead of Merced.

Location	Local Time
Merced (United States)	2025-12-04, 23:34:21 PST
Jeju City (South Korea)	2025-12-05, 16:34:21 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

Castle Airport (MER / KMER) Merced, United States

Destination

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