The opposite side of the world from Osaka (ITM)
Osaka Itami International Airport — 34.78°N, 135.44°E
Exact antipodal point
34.78°S, 44.56°W
Nearest airport to that point
Pelotas, Brazil PET
João Simões Lopes Neto International Airport
The exact point falls in open water or empty terrain: the nearest airport is 798 km away from it. Roughly 71% of the Earth is ocean, so most antipodes land at sea.
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Of the maximum possible
96%
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.