The no-frills airline is adding 63 new connections to connect Tirupati and Rajahmundry on its existing network of Airbus 320 planes and ATRs.
"IndiGo will connect Tirupati and Rajahmundry to Delhi, Mumbai, Kolkata, Dubai, Muscat, Singapore among other cities via Bengaluru, Hyderabad, Chennai and Mangalore," it said in a release.
Currently, the carrier operates more than 900 daily flights connecting 46 destinations.
IndiGo's Chief Commercial Officer Sanjay Kumar said the airline is looking at providing affordable fares on these flights for 6E travellers.
IndiGo's A320 planes are configured with 180 seats and the A320 neo aircraft have 186 seats.