The opposite side of the world from Hong Kong (HKG)
Hong Kong International Airport — 22.31°N, 113.91°E
Exact antipodal point
22.31°S, 66.09°W
Nearest airport to that point
Tarija, Bolivia TJA
Capitan Oriel Lea Plaza Airport
This is a genuinely close pairing — the airport sits just 166 km from the exact antipodal point.
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Of the maximum possible
99.2%
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.