Sønderborg Airport (Danish: Sønderborg Lufthavn) (IATA: SGD, ICAO: EKSB) is an airport located in Sønderborg, Denmark. The airport opened in 1968 however the first flights in the area where in 1950 which were flown by Sønderjyllands Flyveselskab. 
Cimber Sterling operated the connection to Copenhagen until May 3, 2012, when the airline filed for bankruptcy.Danish Air Transport took over the route to Copenhagen just hours after. In April 2013 Alsie Express was founded and started operating between Sønderborg and Copenhagen. Soon after Alsie Express started flying, Danish Air Transport stopped operating the route.
The airport is located 7 km (4.3 mi) from Sønderborg city. Transfer is by taxi or own car. Rental car is also available at the airport. Other cities for which the airport is useful include Åbenrå (41 km (25 mi)), Tønder (70 km (43 mi)) and Flensburg (in Germany, 55 km (34 mi))