Mackinac Island is about 1.2 times smaller than Atlanta Airport.

Atlanta Airport is approximately 11 km² (4.39 sq mi), while Mackinac Island is approximately 9.54 km² (3.68 sq mi), making Mackinac Island 84.0% the size of Atlanta Airport.
Tip: This to-scale comparison of Atlanta Airport vs. Mackinac Island uses the Mercator projection, which distorts the size of regions near the poles.
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