According to the airline, it received the AOP from the Directorate General of Civil Aviation (DGCA) after completing the mandatory test flights and other regulatory obligations.
The airline said that it will soon make announcements on the start of sales, routes and schedules.
Over the last few months the airline's team has been focused on complying with regulatory requirements for all procedural checks.
On Dec 6 Vistara completed the mandatory test flights process which is a mandatory safety audit before an airline is issued an AOP.
The trial flights are conducted under the supervision of the DGCA officials.
The airline currently has two Airbus 320s on lease and plans on having another five by March next year.
The JV airline has Tata Sons holding a majority stake of 51 percent with Singapore Airlines having the remaining 49 percent.
Currently, there are seven all-India and regional carriers including IndiGo, Air India, SpiceJet, Jet Airways, GoAir, Air Costa and AirAsia India.
The New Delhi-headquartered Vistara will be the eight scheduled carrier in the sky and the third to offer full-service carrier.