Kaunas International Airport — Kaunas, Lithuania

Kaunas briefly functioned as Lithuania's provisional capital between the world wars while Vilnius remained under Polish control, a period that left the city KUN serves today with a striking concentration of interwar modernist architecture still admired. That historical detour gave Kaunas a distinct civic identity separate from Vilnius, reflected in its universities, museums, and a compact old town where the Nemunas and Neris rivers meet. In recent years, budget carrier Ryanair established a significant base at KUN, turning what had been a quiet regional airport into a genuine alternative gateway to Lithuania, particularly for travelers seeking lower fares than those available through the capital's airport. That growth has reshaped Kaunas's local economy somewhat, drawing more foreign visitors curious about a city long overshadowed by Vilnius. KUN's relatively simple single-terminal layout keeps operations straightforward even as passenger volumes have climbed substantially.