The European Commission has cleared public support granted by Romania to Timisoara Airport, the country's third largest, and to Wizz Air.
The Commssion said that the aid complied with EU rules ensuring a level playing field.
The EU Commission, the bloc's executive, also approved Romania's plans to grant a temporary loan of about €36.7m to state-owned flag carrier Tarom to ensure the orderly continuation of air transport services.
Separately, the EU competition enforcer ordered Romania to recover €570m of incompatible state aid from rail freight operator CFR Marfa because the support gave it an unfair advantage.