Over 2,800 complaints were registered at various airports for issues like poor service, bad food, lost luggage or other problems, with Delhi and Hyderabad topping the list.
Out of 2,888, 587 complaints were registered at the Delhi airport while Hyderabad stood second with 236 complaints, followed by Bangalore and Nagpur airports with 186 and 170 complaints respectively.
Of the six private-run airports, Mumbai and Cochin registered the lowest number of complaints with 32 and 34 complaints respectively, official figures show.
Similarly, the airports run by Airports Authority of India were also not far behind.
Of the AAI-run airports, most number of complaints were received at Ranchi, Madurai, Ahmedabad, Calicut and Jaipur airports. Ranchi topped the list with 190 complaints followed by Madurai and Ahmedabad with 144 and 141 complaints. 117 at Calicut and 112 were registered at Jaipur and Calicut airports.
Of the metro airports, 82 complaints were registered at the Chennai airport while the least of 10 at the Kolkata airport, official figures show.
In 2009 and 2010, 2,503 and 2,220 complaints were received by the ministry of civil aviation.