- Sliac airport is a small international airport located in Šliac, Banská Bystrica Region, Slovakia. It is situated about nine kilometers southwest of the city of Banská Bystrica. The airport primarily serves as a civilian airport for regional and international flights. It has a single terminal building and offers limited facilities, including a café, car rental services, and parking. Some airlines that operate flights from Sliac airport include Ryanair and Smartwings. The airport is also used for military purposes by the Slovak Air Force.