Hévíz–Balaton Airport Hévíz–Balaton Airport Hévíz–Balaton Airport , previously also known as "Sármellék International Airport" (), is an international airport in Hungary located west of Lake Balaton, south-southwest of the village of Sármellék, Zala County and Keszthely. It gains importance due to the proximity of Lake Balaton, Hungary's most important holiday resort and the thermal spas of Hévíz and Zalakaros. A military airport was already located here in the 1940s. It was paved in the 1950s and functioned as a Hungarian military airport until 1960, and as a Soviet military airport between 1960 and the Autumn of 1990. The current runways were constructed
Lake Constance St. Gallen, and Schaffhausen. The Rhine flows into the lake from the south, with its original course forming the Austro-Swiss border, and has its outflow on the "Lower Lake" where — except for Schaffhausen — it forms the German-Swiss border until the city of Basel. Lake Constance is the third largest freshwater lake in Central and Western Europe in terms of surface area (and the second largest in terms of volume), after Lake Geneva and (in terms of surface area) Lake Balaton. It is long, and at its widest point, nearly wide. It covers approximately , and is above sea