New Delhi, May 20 -- New Delhi: Air India is cutting domestic and international capacity this summer, flying up to 5% fewer flights on domestic routes and nearly 40% less on international corridors compared with a year ago, as a depleted fleet, surging jet fuel costs, and war-related airspace closures squeeze the Tata Group carrier.

cost subsidiary Air India Express together offered roughly 9.24 million domestic seats in April and May, down from 9.71 million a year ago, even as India's largest carrier, IndiGo, expanded domestic capacity 6% to 23.04 million seats and newcomer Akasa Air grew 9% to 1.63 million seats, according to data from aviation analytics firm OAG reviewed by Mint. Seats are a measure of capacity for airlines.

The move...