Maybe you feel like hopping in your rental car and hitting the open road in Kaunas Airport (KUN-Kaunas Intl.) without any plans. However, don't hurry off without brushing up on the basics!Once you've grabbed your suitcase from the luggage carousel at Kaunas Airport (KUN-Kaunas Intl.), get set to start the engine of your rental car and head into Vilnius. The downtown area is about 53 miles east of the terminal.