Air India is the flag carrier airline of India owned by the government run Air India Limited (AIL). The airline operates a fleet of Airbus and Boeing aircraft serving various domestic and international airports. It is headquartered at the Indian Airlines House in New Delhi. Air India has two major domestic hubs at Indira Gandhi International Airport and Chhatrapati Shivaji International Airport, secondary hubs at Chennai International Airport and Netaji Subhas Chandra Bose International Airport. The airline formerly operated a hub at Frankfurt Airport which was terminated on account of high costs. However, another international hub is being planned at the Dubai International Airport.