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There are 3 airports in Portsmouth. Portland Intl Jetport (PWM) is Portsmouth’s primary airport with at least domestic flights and international flights departing from its runways every week. As of today, airlines operate out of Portland Intl Jetport (PWM). Portland Intl Jetport (PWM) is 45.1 miles from Portsmouth and offers nonstop flights to cities. Portsmouth’s secondary airport Boston Logan International Airport (BOS) is 51.6 miles from Portsmouth and has airlines operating out of it and offers nonstop flights to cities with at least domestic flights and international flights departing each week.