Buy tickets and book passes for the free events from URBO’s online booking system

If you can’t find a specific event, please search for it here by title. 

Please make sure your email address is filled in correctly – we will use it to send you the e-ticket and payment confirmation (in case a payment has been made). To enter the event, you will need to show your ticket either on the screen of your electronnic device or on a printed paper copy.   


The events for children are free of charge. Only about 20 percent of the events for general audience cost 5 leva. 


A number of volunteers help the Sofia Science Festival happen and are an indispensable part of the team. They are usually students at math and language high schools. Many of them participate in natural sciences and mathematics national competitions. Their work is very intensive and they need daily provisions such as clothing, food, water etc. By purchasing a donation ticket, you help us keep our volunteers in Olympic shape. The donation ticket costs 5 leva.  

Online payment

To purchase tickets, you will need a bank card which has 3D activated securty (3D Secure). 

Seat allocation and admission into the halls

We are taking all necessary measures in line with local government regulations to ensure the health and safety of all visitors and team members. Please accept our apologies in advance for any inconvenience this may cause. We expect you to wear a mask in all areas of the John Atanasov Innovation Forum building, where the main event halls and stands will be located. We also ask that you comply with the instructions of our team at all times. Your health is our priority! We reserve the right to deny access to anyone who does not comply with these measures.  

  • Please be on time. Seating in the halls is on a first-come, first-served basis. Admission into the halls will not be possible if you arrive more than 10 minutes after the start time of an event.
  • Bookings for the free events are valid until 5 minutes before the start of the event. If there are people without bookings waiting, they will be let into the hall 5 minutes before the event.
  • Events for adults are not recommended for children. If you are visiting with a child, please do make sure it does not disturb the experience of the other attendees. Otherwise you may be asked to leave the hall.
  • Eating in the halls is not desirable and bringing alcoholic beverages is strictly prohibited.

Box office ticket sales

If for some reason you cannot pay online or the payment is not successful, you can buy tickets during the festival, at the Information desk.