Dubrovnik Ruđer Bošković Airport — Dubrovnik, Croatia

Summer transforms this airport from a quiet regional field into one of Croatia's busiest gateways, as travelers flock to a walled Adriatic city so photogenic it doubled as a fictional capital in a globally popular television series. DBV takes its formal name from Ruđer Bošković, an eighteenth-century Croatian polymath whose work spanned astronomy, physics, and mathematics well beyond his homeland's borders. Located in Čilipi, a village south of Dubrovnik's old town, the airport handles a sharply seasonal traffic pattern, with dozens of European carriers adding routes each summer before scaling back drastically in winter. The old town's limestone streets, ancient fortifications, and Adriatic views have made it one of Europe's most visited historic centers, and cruise calls add further pressure on DBV's compact single terminal.