The opposite side of the world from Busan (PUS)
Gimhae International Airport — 35.18°N, 128.94°E
Exact antipodal point
35.18°S, 51.06°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 369 km from the exact antipodal point.
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Of the maximum possible
98.2%
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.