Quick summary
India’s Civil Aviation Ministry has called an emergency mediation session for October 6, 2026, after Mumbai International Airport ordered airlines to surrender 265 weekly international departure slots — a third of Terminal 2’s total — from October 25. IndiGo absorbs the deepest cut, with 74 of its 224 weekly international departures affected; Air India loses 33 of 100. Carriers have formally rejected the reductions, and operator Adani Airport Holdings has warned it will assign the slots itself if written choices miss the 4 p.m. deadline.
The cut comes from Terminal 1’s closure for redevelopment, not a permanent shrinking of Mumbai’s network. Which routes survive — and whether your flight shifts to Navi Mumbai — is what that meeting decides.
A third of Mumbai’s international departures are on the block
From October 25, international flying out of Mumbai’s Terminal 2 is scheduled to shrink by a third. The cause is not soft demand or a route cull — it is the shutdown of the ageing Terminal 1, whose domestic traffic needs somewhere to go while the building comes down.
That somewhere is Terminal 2, and the space has to be taken from international carriers. Airlines have refused to hand it over; the ministry has stepped in; both sides meet on October 6 with a same-day filing deadline hanging over the room.
Anyone holding a Mumbai international ticket this winter faces one of three outcomes: fewer frequencies, a cancellation, or a departure reassigned to Navi Mumbai.
A different airport is not a different gate — it is a different ground journey across the metropolitan region, and a connection that may no longer work.
The directive touches roughly 5 million passengers a year, about 9% of Mumbai’s 55 million annual total, and it lands on the first day of the winter timetable, when long-haul schedules are already locked.
What the slot cut removes, and who absorbs it
Terminal 2 supports about 770 weekly international departures today; removing 265 leaves roughly 505. The change takes effect at 11:59 p.m. on October 25, the first minute of the winter season, per the operator’s communication to airlines.
Carriers had to nominate the slots they would suspend by 4 p.m. on October 6. Miss the cutoff and the operator chooses for them — which is why the Civil Aviation Ministry called the airlines and the airport operator into the same room that day.
The burden is not evenly spread.
IndiGo takes the deepest cut of any carrier, at 74 of its 224 weekly international departures. Air India loses 33 of 100, and SpiceJet is among the airlines represented at the mediation. The rest of the 265 slots fall on the other international operators at Terminal 2.
| Carrier | Weekly international departures | Slots cut | Remaining |
|---|---|---|---|
| IndiGo | 224 | 74 | 150 |
| Air India | 100 | 33 | 67 |
| Terminal 2 total | ~770 | 265 | ~505 |
The plan is framed as temporary and is inseparable from Terminal 1’s closure on October 25: domestic traffic moves into Terminal 2 while the older building is rebuilt. Once work starts in January 2027, Terminal 1’s capacity is projected to rise from 15 million to 20 million passengers a year. A fire there in April 2026 underlined the cost of keeping the facility in service.
The International Air Transport Association wrote to the ministry on September 9 with conditions rather than a flat objection — any relocation must rest on an operational readiness process agreed with airline stakeholders, and be voluntary and viable both commercially and operationally. Carriers have asked the operator to release its consultation records and capacity assessment data, and have formally rejected the reductions.
To steer services toward Navi Mumbai, the operator is offering a 100% landing-charge discount plus vouchers for international passengers. Adani Airport Holdings dates consultations over Terminal 1 to 2020.
Mumbai remains the main long-haul gateway into western India for European travelers, and flights from Europe to India through it have few direct substitutes.
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The 19-day gap between decision and deadline
Nineteen days separate the ministry’s October 6 meeting from the October 25 start date. That is not much time to retime aircraft rotations, rebuild crew rosters and reaccommodate passengers — let alone stand up a second operation at an airport some carriers have never used.
Slot allocation at congested hubs normally runs through twice-yearly scheduling conferences, where carriers trade and adjust coordinated timings under industry rules. An operator issuing a unilateral reduction, and a ministry chairing a mediation over it, both sit outside that routine.
The headline percentage also flatters the situation. A third of Terminal 2’s international departures is an average across every carrier flying from it, not a figure confined to the airlines named in the first round of reporting. Routes with a single daily frequency cannot absorb a partial cut — they either fly or they do not.
What to do before October 25
Mumbai’s winter schedule is being rewritten in real time, and every international ticket out of the city from October 25 onward is exposed to a change.
- Confirm the airport on every itinerary. A flight moved to Navi Mumbai is a different ground journey, not a different gate — check before booking onward transport or a hotel.
- Turn on schedule-change alerts now. Use the airline’s own manage-trip tool or app rather than waiting for an email that may arrive days late.
- Compare Delhi, Bengaluru and Hyderabad before accepting a substitute. All three carry long-haul service to Europe and the Gulf, and a rebooking through one of them may beat a Mumbai itinerary that now touches two airports.
- Ask what a change entitles you to before you accept it. Refund eligibility and rebooking terms vary by carrier and by how much notice you receive.
- Build a buffer into tight connections. If your revised routing touches two Mumbai-area airports, a same-day connection is a gamble.
Watch: the ministry’s readout after the October 6 session. If the filing deadline is extended or the cut is phased, most carriers will hold their Terminal 2 frequencies through the winter. If it is not, expect schedule-change notices within a week.
Questions? Answers.
Which airlines lose international slots at Mumbai?
IndiGo faces the largest single reduction — 74 of its 224 weekly international departures. Air India loses 33 of 100. The remaining slots are shared across the other carriers operating international services from Terminal 2, including SpiceJet. The final split depends on what airlines submit by the October 6 deadline, or on what the operator selects for them.
What happens if airlines miss the October 6 deadline?
The operator has said it will allocate the slots unilaterally. Carriers would then receive reductions chosen for them rather than ones they picked to protect their most valuable routes.
Is the cut permanent?
No. It is tied to Terminal 1’s redevelopment. Domestic operations move into Terminal 2 while the older building is rebuilt, and Terminal 1’s capacity is projected to rise from 15 million to 20 million passengers a year once work begins in January 2027.
Will my flight move to Navi Mumbai?
Some services may. The operator is offering a full landing-charge waiver and passenger vouchers to encourage the shift, but airlines still have to make crew, aircraft and connection logistics work. Check the airport named on any revised itinerary before accepting it.
