You will arrive to Cluj-Napoca (or simply Cluj, as most Romanians prefer to call it) at the Avram Iancu Airport (CLJ). It is the only airport in the city and the biggest one in Transylvania: http://airportcluj.ro/

Getting to city center by public transport: Bus line 5 runs between the airport and the city of Cluj-Napoca. The trolleybus departs approximately every 10 minutes between 05:00 a.m. and 22:00 p.m., on weekends and evenings every 15 to 20 minutes. 

The airport bus stop is located 200 meters away from the terminal, along the ‘Strada Traian Vuia’. It is a short walk from the terminal, you first have to go to the main road and then to the right. 

In the center of Cluj-Napoca, you can get off at the stops Constanta (Regionale CFR), Sora and Central. The bus ride to one of these bus stops takes an average of 25 minutes. The first and final stop of bus line 5 is known as Fierul and can be found in the street ‘Strada Cuza Voda’. 

Tickets are available at vending machines and service counters near the bus stops. Keep in mind, it is not possible to buy a ticket from the bus driver. The price is 2.00 RON for a single ride and 4.00 RON for two journeys. 

As well, you can take bus line 8 for travelling between the airport and downtown Cluj-Napoca, the bus runs about every 20 minutes and only from Monday till Friday.

Schedule for line 5: http://ctpcj.ro/index.php/en/timetables/urban-lines/linia-5 

Schedule for line 8: http://ctpcj.ro/index.php/en/timetables/urban-lines/line8