The cheapest way in. Nothing listed is quicker.
Bus 100 to Piața Unirii
100 · STB — Societatea de Transport București, on the TPBI tariffPickup, hours & luggage
Boards at. The stops in front of the Arrivals terminal and in front of the Departures terminal, in the airport's words; STB times the line from its "Aeroport Henri Coandă Plecări" (Departures) terminus
The ordinary city fare, not an airport fare: RON 3 covers 90 minutes from validation on any surface vehicle in the region, with unlimited changes, and stays valid to the next stop after time runs out. There is no express or airport ticket. Pay by tapping any contactless bank card at the validator (no commission; press "+" for each extra traveler), an STB card from the machine or kiosk, the 24Pay or LETZ PAY app, or SMS to 7458 (EUR 0.65 plus VAT, sent before boarding). Two journeys cost RON 6, ten cost RON 25, and a 24-hour pass is RON 8. Children under 7 ride free. A bulky bag on a seat or the floor costs another RON 3.
Luggage. A city bus with no racks. The regulation charges a second RON 3 for every seat or floor space a bulky bag occupies, and makes anything larger than 60 × 60 cm an offence.