If you need a Varna Airport car rental, SIXT is a prime choice. We offer rental services seven days a week with flexible hours, plus 24-hour returns. For a large group, a station wagon makes a great rental choice. If you are traveling on a romantic getaway, a premium sedan would be a good choice. Save money on fuel by adding a diesel preferred option to your rental. If you have brought kids along on your trip, you can easily add child seats to your rental.