Mumbai Airport is preparing for a major change that could affect  passengers every day. Mumbai International Airport Limited has announced that Terminal 1 at Chhatrapati Shivaji Maharaj International Airport will halt flight operations from October 25, 2026. The terminal will remain closed while the airport operator carries out its redevelopment project. Travelers should therefore check their airport and terminal details carefully before starting their journey.

Why Is Mumbai Airport Terminal 1 Closing?

Mumbai Airport Terminal 1 is nearly 80 years old  and is now set for major redevelopment. The airport operator has been planning the reconstruction for several years, with the demolition plan dating back to 2018. The project could not move forward earlier because there was no alternative operating facility available for the affected airlines. 

With Navi Mumbai International Airport now operational and available as an alternative within the Mumbai Metropolitan Region, MIAL can move ahead with the redevelopment. AERA documents also show that the reconstruction of Terminal 1 has been considered as part of the airport’s capacity and traffic planning.  The regulator reviewed the proposal along with expected traffic shifts between Mumbai Airport and Navi Mumbai Airport.

When Will Mumbai Airport Terminal 1 Close?

Airline operations will be realigned during the transition, with affected services moving to other facilities or being temporarily suspended.  The new Terminal 1 is expected to become operational in 2029-30, according to the latest MIAL information, although the project timeline could change. 

How Busy Is Mumbai Airport Terminal 1?

Terminal 1 handles a significant volume  of Mumbai’s passenger traffic. According to recent reporting, T1 handled nearly 15 million passengers in the financial year 2025-26, while Terminal 2 handled around 40 million passengers. Mumbai Airport’s two terminals together handle around 950 flight movements a day. . These numbers show why realigning T1 operations will be a significant task for airlines and airport authorities.

What Should Passengers Do After October 25?

One of the main risks  for passengers during the transition is going to the wrong airport or terminal. Travelers should check their flight details before departure rather than relying on an older booking confirmation. Passengers should especially:

• Check whether the flight operates from Mumbai Airport Terminal 2 or Navi Mumbai International Airport.
• Read airline emails, SMS alerts and app notifications.
• Confirm the terminal before leaving home.
• Allow extra travel time if the flight has moved to Navi Mumbai.
• Recheck connecting flights if your itinerary involves  different airports.
• Avoid assuming that a route will continue from the same terminal as before.

This will become particularly important during the initial phase of the Mumbai Airport T1 closure.

The Mumbai Airport Terminal 1 closure from October 25, 2026 will bring significant changes for passengers flying through the city. Travelers should carefully check their airline, airport, and terminal information before every journey during the transition.

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Mumbai Airport is preparing for major changes as it moves ahead with the redevelopment of Terminal 1. Mumbai International Airport Ltd (MIAL) has proposed shifting selected flights to Terminal 2 and Navi Mumbai International Airport in phases from October 2026. Passengers should check the airline’s latest terminal and airport details before leaving for their flight.

Why Mumbai Airport Is Shifting Flights

MIAL plans to redevelop Terminal 1, one of Mumbai Airport’s older terminal facilities. The first phase of the work will focus on the northern section of Terminal 1-B. The airport operator wants to redistribute flight operations before demolition begins. This approach will help airlines adjust their schedules and reduce inconvenience for travelers. Terminal 1 and Terminal 2 together handle around 950 flight movements each day. Terminal 1 can handle about 15 million passengers annually, while Terminal 2 can handle around 40 million passengers each year.

International Flights May Move to Navi Mumbai Airport

MIAL has proposed shifting at least one-third of international air traffic movements to Navi Mumbai International Airport from October 1, 2026. The proposed change will move some international operations away from Mumbai Airport’s Terminal 2. However, the final list of participating airlines, routes, and flights may vary during the transition.

Travelers with international flights from Mumbai should not assume that their flight will continue to depart from Terminal 2. They should check their airline app, booking email, and flight-status page before traveling to the airport.

Selected Terminal 1 Flights May Shift to Terminal 2

From October 25, 2026, MIAL plans to move at least one-third of Terminal 1 air traffic movements to Terminal 2. The change will affect selected domestic flights currently operating from Terminal 1. Airlines will share the exact terminal details with passengers based on their booked flights.

At present, airlines such as IndiGo, SpiceJet, Alliance Air, and Star Air operate domestic flights from Terminal 1. Akasa Air already shifted its domestic operations to Terminal 2 in August as part of the airport’s operational realignment. Passengers should always confirm their terminal with the airline, even if they have used the same route before.

Terminal 1 Redevelopment Will Begin in January 2027

MIAL plans to begin demolition of the north section of Terminal 1-B on January 15, 2027. This part of the terminal handles around five million passengers each year. The airport will provide airlines with a transition period before redevelopment work begins. The redevelopment will take place in phases, allowing Mumbai Airport to continue serving travelers while Terminal 1 undergoes modernization.

Navi Mumbai Airport Transition

The planned flight redistribution will support Mumbai Airport’s Terminal 1 redevelopment while helping airlines continue their services. Terminal 2 and Navi Mumbai International Airport will play an important role in managing passenger traffic during the transition. The changes do not mean that every flight will move from Mumbai Airport. MIAL and airlines will decide the final flight assignments as the transition plan develops.

From October 2026 onward, passengers flying from Mumbai should stay updated and confirm their departure details directly with the airline.

Mumbai Airport’s proposed flight shifts will begin in October 2026, with selected international flights moving to Navi Mumbai International Airport and selected Terminal 1 flights moving to Terminal 2. The Terminal 1-B redevelopment is scheduled to begin in January 2027.

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