If you're travelling around Sofia in 2020 you will use the city's new MAAS (Mobility-as-a-Service) platform. It will plan the ideal route from your starting point to your destination and you will simply buy a "Sofia SMART" ticket to your destination via text message or app.
The price of transport may vary. Depending on the comfort level or the route or the time of travel while all transport options converge around you to get you to your destination and to provide you with the best price per trip.
Under the patronage
of The Mayor of Sofia