Distance From RAF Ascension Island to Jeju International Airport, ASI - CJU Distance

The distance from RAF Ascension Island (ASI) to Jeju International Airport (CJU) is 9385 miles or 15103 kilometers or 8150 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 Cat Hill ( Saint Helena, Ascension and Tristan da Cunha ) to Jeju City ( South Korea )?

A one-way nonstop (direct) flight between Cat Hill and Jeju City takes around 21 hours 34 minutes.

Estimated flight time from RAF Ascension Island, Cat Hill, Saint Helena, Ascension and Tristan da Cunha to Jeju International Airport, Jeju City, South Korea is 21 hours 34 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 • ASI - CJU

Kilometers		15103 km
Statute Miles		9385 miles
Nautical Miles		8150 nm
Avg. Time of Flight		21 hours 34 minutes

RAF Ascension Island to Jeju International Airport Flight Route Map - ASI to CJU Flight Path

Location of RAF Ascension Island & Jeju International Airport is given below.
Click the map to view Cat Hill to Jeju City nonstop flight path and travel direction.

Click to see flight route on Google Map between Cat Hill, Saint Helena, Ascension and Tristan da Cunha and Jeju City, South Korea. .

Nonstop flight route between Cat Hill, Saint Helena, Ascension and Tristan da Cunha and Jeju City, South Korea.

Time Difference Between the Airports • ASI - CJU

Time difference between Cat Hill (Saint Helena, Ascension and Tristan da Cunha) and Jeju City (South Korea) is 9 Hours.
Jeju City time is 9 Hours ahead of Cat Hill.

Location	Local Time
Cat Hill (Saint Helena, Ascension and Tristan da Cunha)	2026-09-15, 00:41:09 GMT
Jeju City (South Korea)	2026-09-15, 09:41:09 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

RAF Ascension Island (ASI / FHAW) Cat Hill, Saint Helena, Ascension and Tristan da Cunha

Destination

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