The opposite side of the world from Jeju City (CJU)
Jeju International Airport — 33.51°N, 126.49°E
Exact antipodal point
33.51°S, 53.51°W
Nearest airport to that point
Punta del Este, Uruguay PDP
Capitan Corbeta CA Curbelo International Airport
This is a genuinely close pairing — the airport sits just 209 km from the exact antipodal point.
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Of the maximum possible
99%
No two points on Earth can be more than about 20,015 km apart.
The antipode is found by negating the latitude and shifting the longitude by 180°. Distances use the haversine formula on a sphere of mean radius 6,371.0088 km. Airport coordinates come from the public-domain OurAirports dataset.