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There are 2 airports in Sosua. La Union Airport (POP) is Sosua’s primary airport with at least domestic flights and international flights departing from its runways every week. As of today, airlines operate out of La Union Airport (POP). La Union Airport (POP) is 3.5 miles from Sosua and offers nonstop flights to cities. Sosua’s secondary airport Santiago Municipal Airport (STI) is 25.2 miles from Sosua and has airlines operating out of it and offers nonstop flights to cities with at least domestic flights and international flights departing each week.