OAG’s September 2026 India briefing puts scheduled capacity at 22.7 million seats, 4.5 percent below September 2025’s 23.8 million. Domestic seats are 15.0 million, down 5.6 percent. International seats are 7.7 million, down 2.1 percent. Low-cost carriers still hold about 69 percent of the market and still shrank. This is not a festive rebound. It is a month in which the world’s largest domestic aviation markets that contracted included India at the front of the list. Global capacity, in the same OAG season, was still rising. South Asia was not.
Inside that smaller pie the ranking is familiar and the rates are not. IndiGo remains half the country, 11.26 million seats, down 4.5 percent, the same rate as the market, which means the leader is not taking share so much as matching the tide. Air India is 3.22 million seats, down 8.8 percent, roughly twice the industry cut. Air India Express is 2.54 million, down 2.6 percent. Together the two Air India brands are about a quarter of India and are giving ground. Akasa is the domestic name still adding metal with 837,000 seats, up 5.0 percent. SpiceJet is 261,000 seats, down 45 percent. On the international side Emirates is fractionally up and, Etihad, Singapore, Qatar and Air Arabia are fractionally down. Gulf and Asian network carriers are not storming a shrinking India. They are holding frequency while the local full-service flag cuts deeper.
The interesting map is not the airline table. It is the city pairs that still grew while the country shrank. Mumbai-Delhi, already the busiest domestic route, is scheduled at 677,300 seats, up 13.9 percent. Bengaluru-Pune is the fastest of the large pairs OAG highlighted, up 26.8 percent to about 212,000. Bengaluru-Delhi, Delhi-Pune and Kolkata-Delhi all added seats. Mumbai-Hyderabad and Mumbai-Chennai lost them. Ahmedabad-Delhi lost them. That is network discipline in a fuel-and-airframe squeeze to protect the trunk, feed Delhi, thin the second-tier metros that do not fill a narrowbody twice a day. Delhi does not need a separate airport-trophy paragraph to be the system winner. Enough of the pairs that still grow touch it. Mumbai, Bengaluru, Hyderabad, Chennai and Kolkata can all post fewer total seats in the same snapshot and still be busy airports. They are no longer the places airlines choose first when the fleet is short.
Air India’s problem in this month is not that rivals invented demand. It is that a turnaround carrier cutting faster than the market hands relative share to IndiGo’s inertia and Akasa’s small increment while the profitable city pairs re-centre on Delhi. Headline growth is over for the quarter. The next test is whether the seats that remain are on routes that earn and whether the airline that cut 8.8 percent still has a winter bank that looks like a hub rather than a retreat.