The cheapest way to the airport. Nothing listed is quicker.
Metro M4 from Terminal 2
M4 · Metropolitan EAD, the Sofia metroPickup, hours & luggage
Boards at. Serdika, the M1/M4 platforms — a train signed Letishte Sofia (Sofia Airport), not Business Park, and not the M2 platforms at Serdika II
EUR 0.80 tapped with a contactless bank card, phone or watch at the entrance gates, or as a single from the ticket office or machine in the station; a ticket bought on board from an inspector is EUR 20. A day on one bank card is capped at EUR 2.00; a 24-hour pass is EUR 3.00 and a 72-hour pass EUR 7.60, night buses included.
Luggage. Two pieces of hand luggage ride free; each further piece needs its own EUR 0.80 ticket.
Hours. From Serdika 05:08 to 23:23 on weekdays and 05:10 to 23:32 at weekends, at the same headways as the way in; 27 minutes to Terminal 2.