Gustavus Airport (IATA: GST, ICAO: PAGS, FAA LID: GST) is a state-owned public-use airport located in Gustavus, a city in the Hoonah-Angoon Census Area of the U.S. state of Alaska. Scheduled airline service is subsidized by the Essential Air Service program.

As per Federal Aviation Administration records, the airport had 11,828 passenger boardings (enplanements) in calendar year 2008, 8,822 enplanements in 2009, and 9,996 in 2010. It is included in the National Plan of Integrated Airport Systems for 2015–2019, which categorized it as a nonprimary commercial service airport based on 9,509 enplanements in 2014.