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There are 5 airports in Kingston. Niagara Falls Intl Airport (IAG) is Kingston’s primary airport with at least domestic flights and international flights departing from its runways every week. As of today, airlines operate out of Niagara Falls Intl Airport (IAG). Niagara Falls Intl Airport (IAG) is 146.8 miles from Kingston and offers nonstop flights to cities. Kingston’s secondary airport Toronto Island Airport (YTZ) is 149.9 miles from Kingston and has airlines operating out of it and offers nonstop flights to cities with at least domestic flights and international flights departing each week.