The airports said in a statement Wizz Air starts flying to Athens on March 25 and Aegean flights will start on June 12.
The flights will be operated on Tuesdays, Wednesdays, Thursdays, Saturdays and Sundays.
The international airport in Cluj-Napoca will host five regular flights to and from Athens, Greece, starting 2018, two be operated by Wizz Air and Aegean Airlines.