Prime Minister Narendra Modi inaugurated Phase 1 of the Navi Mumbai International Airport (NMIA) on October 8, 2025, at a cost of ₹19,650 crore. It is India's largest Greenfield airport developed under Public-Private Partnership, with Adani Group holding 74% stake and CIDCO (Maharashtra government) holding 26%.

Phase 1 features a single passenger terminal handling 20 million passengers annually, a 3,700-metre runway, and lotus-inspired architecture blending cultural heritage with sustainability. An Automated People Mover connects terminals through underground tunnels. Commercial operations began December 25, 2025, with the first IndiGo flight from Bengaluru. Mumbai thus became one of the few cities globally with multiple international airports.