On June 18 (Monday), Bulgarian State Railways (BDZ) will start to sell tickets in advance for the trains travelling to Varna and Burgas in the summer season, announced the press centre of BDZ. Tickets can be booked and purchased 20 days before the trip. Normally, this term is five days. The service is aimed at the convenience of passengers, giving them an opportunity for early planning. Tickets can be booked and purchased in advance at all railway stations and ticket offices in the country. Information about the vacant seats on trains can be obtained both at ticket offices and on the telephone numbers published on the webpage of BDZ.