The opposite side of the world from Bologna (BLQ)
Bologna Guglielmo Marconi Airport — 44.54°N, 11.29°E
Exact antipodal point
44.54°S, 168.71°W
Nearest airport to that point
Te One, New Zealand CHT
Inia William Tuuta Memorial Airport
The exact point falls in open water or empty terrain: the nearest airport is 623 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
96.9%
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.