Adani Airports to begin phased redevelopment of Mumbai Terminal 1B in January
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Sources

The North Section of Terminal 1B will be redeveloped, temporarily affecting about five million passengers and raising the terminal’s capacity from 15 million to 20 million passengers per year.
Project scope and timeline
Adani Airport Holdings Ltd will start a phased redevelopment of the North Section of Terminal 1B in January. The North Section accounts for roughly one‑third of Terminal 1’s capacity.
Passenger impact
The redevelopment will temporarily de‑operationalise around five million passengers per year, about nine per cent of Mumbai airport’s total annual traffic of nearly 55 million passengers. Approximately 91 per cent of passenger traffic will remain unaffected.
Capacity increase
The project is expected to raise Terminal 1’s capacity by about 33 per cent, increasing it from the current 15 million passengers per annum to 20 million passengers per annum.
Airline mitigation measures
Airlines have been offered the option of temporarily shifting operations to Navi Mumbai International Airport, which is providing a 100 per cent discount on landing fees for new international flights.
What's still unclear
economictimes.indiatimes.com states the redevelopment will begin in January without specifying a year, while sources 2‑8 specify January 2027 as the start date.
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