O'Hare Airport is about 7 times smaller than Aruba.

Aruba is approximately 180 sq km, while O'Hare Airport is approximately 27 km² (11 sq mi), making O'Hare Airport 15.21% the size of Aruba.
Tip: This to-scale comparison of Aruba vs. O'Hare Airport uses the Mercator projection, which distorts the size of regions near the poles.
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