VK Singh said 529 such complaints were received from the Hyderabad airport, 301 from the Mumbai airport and 150 from the Bengaluru airport, he said in a written reply to a question in Rajya Sabha.
Currently, three of the four B747 aircraft are under maintenance checks, Minister of State for Civil Aviation V K Singh said.
The carriers have been operating only 50% of their pre-COVID domestic flights since June 1 in accordance with a May 28 order of the ministry.
IndiGo's revenue from operations declined by 59.1 per cent during the fiscal to 14,640.6 crore as against Rs 35,756 crore in FY20, the company informed in a regulatory filing.
Airlines can operate only 50 per cent of their pre-COVID domestic flights from June 1 instead of 80 per cent permitted currently.
The latest statement from the Directorate General of Civil Aviation said that the new move has been made in view of the prevailing Covid-19 situation.
According to ratings agency ICRA, one has to go back all the way to financial year 2010-11 for a lower traffic figure of 53.8 million passengers on local air routes.
Mamata said that she has asked the chief secretary to request the Civil Aviation Ministry to defer the services at Kolkata airport to May 30.
In a release today, the airline said it would commence flight operations between Chandigarh and Lucknow, Ahmedabad and Jodhpur as well as Vadodara and Jaipur.
The new services will also help connect guests with other cities including metros as well as the airline's global network via its hubs in Mumbai, Delhi, and Bengaluru.