A record 55.5 million passengers at CSMIA in 2025 — and on 25 December the city opened a second airport: Navi Mumbai International, designed by Zaha Hadid Architects, scaling from 20 million to a 90-million endgame.
Chhatrapati Shivaji Maharaj International Airport closed 2025 with its highest-ever traffic: approximately 55.5 million passengers — 39.2 million domestic and 16.3 million international, up 7.6% on 2023.
November 29 set the all-time single-day record at 175,925 passengers, and 2025 added new international routes to Almaty, Amman, Bali, Copenhagen, Manchester and Tbilisi. Dubai remains the top international destination with a 15% share; the Middle East accounts for 48.8% of international traffic.
Navi Mumbai International Airport commenced commercial operations on 25 December 2025, handling over 4,000 passengers on day one across nine domestic destinations. Phase one capacity is 20 million passengers a year, scaling to 90 million at full build-out across four terminals and two parallel runways.
The lotus-inspired terminal by Zaha Hadid Architects is India’s first airport planned for multi-modal access — water taxis, high-speed rail, metro and the Atal Setu sea bridge putting South Mumbai 20 minutes away. Within months of opening, NMI had already crossed 3 million passengers.
Adani operates both airports “in synergy”: NMI absorbs growth while a $1 billion upgrade modernises CSMIA. Mumbai now joins London, New York, Tokyo and Shanghai in the multi-airport megacity club.
The 55.5-million record and the 90-million endgame are the same bet placed twice: that India’s aviation market — already the world’s third largest — doubles again. Mumbai is the first Indian city to build the infrastructure for that bet before the congestion arrived, not after.
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