Mumbai International Airport Ltd has threatened to cut 265 weekly international departure slots at Terminal 2 from October 25.
It cited the redevelopment of Terminal 1, which needs about 5 million passengers a year to move to Terminal 2.
The airport has asked airlines to identify slots to discontinue by 4 pm on October 6.
IATA has opposed compulsory relocations.
The reports did not include direct statements from the government or the airlines.
For airlines that do not respond, MIAL will decide the cuts itself.
The International Air Transport Association, or IATA, has opposed compulsory airline relocations.
IATA has argued for voluntary transfers and for protecting existing slot entitlements during the transition.
A slot is the approved time at which an airline may take off from or land at an airport.
The reports did not include a direct statement from the government or the airlines on the proposed cut.
Mumbai’s Chhatrapati Shivaji Maharaj International Airport has two terminals, Terminal 1 and Terminal 2, and Terminal 2 opened in 2014.
October 25, 2026 is the last Sunday of October, the date on which the northern winter flight schedule normally begins.
Air India, Air India Express, Akasa Air, IndiGo and SpiceJet are Indian carriers, while Emirates and Etihad Airways are Gulf carriers.
The cuts are proposed on weekly international departure slots, which means the figures describe flights each week, not a single day.
IATA is the trade body that represents airlines worldwide.
Mumbai International Airport Ltd, or MIAL, has threatened to temporarily discontinue 265 weekly international departure slots at Terminal 2 from October 25, 2026.
The cut would be about 33% of the 770 weekly international departure slots at the terminal.
The reduction would affect 46 airlines.
MIAL cited a dispute with airlines over the transition linked to the redevelopment of Terminal 1.
Chhatrapati Shivaji Maharaj International Airport, Mumbai (file image), Wikimedia Commons, CC BY 4.0