The stop is outside the Terminal 1 building – follow the inter-terminal transport signs. The ride is short, but with waiting time allow at least 40–50 minutes before you need the check-in desks at Terminal 2.
T1 ↔ T2
Terminal 1 ↔ Terminal 2
Free inter-terminal transfer between Terminal 1 and Terminal 2 at Sofia Airport.
Free shuttle, day and night
The inter-terminal bus is free and runs day and night roughly every 20–40 minutes depending on the hour. The metro is only at Terminal 2, so the shuttle is the main link for anyone flying from or arriving at Terminal 1 who wants the metro.
If you arrived by metro but your flight leaves from Terminal 1 (usually Wizz Air), walk from the station to Terminal 2 and find the shuttle stop in front of the building.
If the next shuttle is more than 20 minutes away, a taxi from the rank outside will take you over in a few minutes for a minimal fare.