Mumbai International Airport Ltd (MIAL), controlled by Adani Group, reiterated on Monday that airlines must independently decide whether to shift their flights to Navi Mumbai airport, temporarily suspend operations in Mumbai, or seek other options within the schedule for Summer 2027.
In its communication to the Airline Operators Committee (AOC), which represents airlines operating at Mumbai airport, MIAL emphasized again that during the summer period of 2027, Mumbai airport will serve approximately 5 million fewer passengers annually due to the closure of Terminal 1 for reconstruction. Both airports, Mumbai and Navi Mumbai, are managed by Adani Group.
MIAL's response to the AOC followed two days after the committee sent a letter to MIAL rejecting any unilateral redistribution of traffic, reduction of slots, or relocation of international operations without proper procedure. The AOC stated that airlines did not agree to transfer international operations to Navi Mumbai or to any reduction or cancellation of existing slots.
In an email to AOC members on Monday, MIAL referred to a meeting held on October 13 with airlines, noting that individual carriers have complete freedom in making decisions regarding their plan for the Summer 2027 schedule. MIAL clarified: 'As we explained at the October 13 meeting, the capacity of Mumbai airport should be limited by approximately 5 million passengers per year according to the S27 schedule.'
S27 is a commonly accepted abbreviation in the aviation industry for the Summer 2027 flight schedule. In aviation, the summer schedule is valid from the last Sunday of March to the last Saturday of October, while the winter schedule runs from the last Sunday of October to the last Saturday of March.
Furthermore, MIAL reported that airlines can choose to shift part or all of their operations to Navi Mumbai, temporarily halt activities at Mumbai airport until Terminal 1 resumes operation, or seek alternative locations. The operator added that the decision to participate in consultations with the Airport Operations Control Centre (AOCC), which coordinates airport operations, remains solely up to each individual airline.
The airport operator also confirmed that it will restore all historical slots at Mumbai airport after the completion of Terminal 1 reconstruction and its commissioning by 2030. A slot is a designated time when an airline can take off or land at the airport.
The dispute began in August when MIAL started discussions about shifting international flights to Navi Mumbai as part of the Terminal 1 reconstruction. Following this, the operator proposed moving 265 out of 770 weekly international flights from Terminal 2 of Mumbai airport to Navi Mumbai during the winter schedule, which begins on October 26.
MIAL's plan is linked to the reconstruction of Terminal 1, which is expected to be closed for restoration. The airport operator stated that the capacity of approximately 5 million passengers should be limited at Mumbai airport during Summer 2027, insisting that the reconstruction is necessary to address the issues of Terminal 1's outdated infrastructure.
Airlines questioned the basis for the proposed shift and requested detailed information on terminal capacity, passenger flow, and usage. The AOC also demanded clarification regarding the methodology used to determine the proposed reduction in international operations, stating that airlines cannot be forced to shift or reduce operations without the necessary data, consultation, and regulatory process.
The Ministry of Civil Aviation intervened in the dispute earlier this month. After a meeting on October 6 involving the ministry, MIAL, and Navi Mumbai International Airport, the airport operator was advised to engage with stakeholders to develop a mutually agreed transition plan instead of following its initial proposal.
At the October 13 meeting, MIAL assured airlines that the historical distribution of slots would not be disrupted during the 2026-27 winter schedule. It also announced that a joint working group would be established to develop a plan for implementing the Terminal 1 reconstruction. The next meeting between the airport operator and airlines is scheduled for October 28.


