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There are 2 airports in Saint Louis. Lambert-St. Louis Intl Airport (STL) is Saint Louis’s primary airport with at least domestic flights and international flights departing from its runways every week. As of today, airlines operate out of Lambert-St. Louis Intl Airport (STL). Lambert-St. Louis Intl Airport (STL) is 12.5 miles from Saint Louis and offers nonstop flights to cities. Saint Louis’s secondary airport Scott Air Force Base (BLV) is 19.1 miles from Saint Louis and has airlines operating out of it and offers nonstop flights to cities with at least domestic flights and international flights departing each week.