Mumbai airport T1 to T2 transfer 2026: what IndiGo domestic-to-Air India international passengers actually need to know
By Saanvi Iyer (Saanvi Iyer writes offbeat destination guides for Indian travellers — places that work in monsoon, shoulder-season picks, and the cities Indian first-time international travellers underrate. Based in Bangalore, perpetually mid-itinerary.) · Published · 10 min read
Connecting from an IndiGo domestic flight into Mumbai's T1 (Chhatrapati Shivaji Maharaj International Airport's old terminal) and then transferring to Air India international at T2 is one of India's most underestimated connection stress-traps. The two terminals are physically separate buildings. This guide gives you the honest timing, the baggage rules, the shuttle situation, and a plain-language walk-through of what the immigration and security flow looks like.
TL;DR — minimum safe connection time at Mumbai BOM
If you are arriving at Mumbai Terminal 1 on IndiGo domestic and connecting to an international flight at Terminal 2, allow a minimum of 3 hours between your domestic arrival time and international departure time — and 3.5 hours if you have checked baggage that needs to be re-checked. In peak periods (winter fog season November–February, monsoon delays June–September, or any school holiday break), 4 hours is safer. The T1–T2 road journey is 10–15 minutes, but the full process of exiting T1 arrivals, transporting yourself, re-entering T2 security, re-checking bags and getting to an international departure gate takes considerably longer than the road time suggests. Verify your specific connection requirements on the Air India or IndiGo booking pages before finalising a tight itinerary.
Why are Mumbai's T1 and T2 in separate buildings?
Mumbai's Chhatrapati Shivaji Maharaj International Airport (BOM) has a history as complicated as its traffic. T1 (the Domestic Terminal, also historically called the Santa Cruz terminal) handles domestic operations for IndiGo, Akasa Air, Air India Express and some other carriers. T2 is the grand 2014-built integrated international terminal — it also handles some domestic Air India operations, which is part of why the separation is confusing.
The two terminals are not connected by any airside walkway, elevated connector or on-airport transit. They are about 4–6 km apart by road (the exact distance depends on which entry/exit gate you use). To transfer between them, you physically exit one terminal's arrivals level, cross public roads, and enter the other terminal's departures forecourt. There is no sealed airside connection like you get at Singapore, Dubai or even Delhi T2–T3.
This means: a T1–T2 connection is, in effect, the same as leaving an airport, taking a cab, and re-entering security at a different airport. That is exactly how you need to think about your time.
What does the actual transfer process look like step by step?
Let us walk through what happens if you land at T1 on IndiGo and need to catch Air India international at T2:
- Deplane and collect bags at T1 (if checked). IndiGo's T1 baggage carousel at Mumbai is notoriously slow during peak periods — budget 20–40 minutes from aircraft door to bag in hand. If you travelled hand-baggage only, you are out of T1 arrivals in 10–15 minutes.
- Exit T1 arrivals to the forecourt. Ignore the uninformed cab touts and proceed to the prepaid taxi booth or Ola/Uber pickup zone. The prepaid taxi to T2 is typically ₹200–₹350 (verify current rates at the booth). Ola/Uber from the designated pickup point outside T1 arrivals is often ₹180–₹280 but can surge. Travel time to T2 is 10–20 minutes depending on traffic — Mumbai airport road traffic is genuinely unpredictable.
- Enter T2 departures. Show your Air India boarding pass (or booking reference if you have not checked in yet) at the T2 entry gate. T2 entry has a CISF check for your travel document and booking confirmation before you can even approach the check-in counters.
- Re-check your bags at Air India counter (if applicable). On separate tickets, you must queue at Air India check-in to re-check your bags. Air India check-in at T2 can have long queues — 30–60 minutes is not unusual at peak times. Do web check-in on Air India's app in advance to at least have your boarding pass ready, but bags still need to be dropped at a counter or self-service bag drop (where available).
- Clear T2 security and immigration. For international departures, this means CISF security check and then immigration stamping (emigration). Combined time varies wildly — 20–40 minutes on a normal day, 60–90 minutes on a peak day with full queues.
- Reach your gate and board. T2 is large; allow another 10 minutes to walk to the gate from immigration.
Total realistic time from T1 aircraft door to T2 boarding gate: 1.5–2 hours on a good day, 2.5–3 hours on a bad day. Which is why 3 hours is the minimum I recommend, not a comfortable buffer — it is barely enough.
Is there a free shuttle between T1 and T2 at Mumbai?
This question comes up constantly, and the answer is: not in the same way Delhi has a shuttle. Mumbai Airport (MIAL, now managed under Adani Airports) does not operate a publicly promoted free inter-terminal shuttle bus service of the type that DEL's DIAL runs. Transfers between T1 and T2 are typically done by:
- Prepaid airport taxi: Available from the prepaid booth inside T1 arrivals. Fixed rate, no haggling. The most reliable option for travellers unfamiliar with the area.
- Ola/Uber: The pickup zones at BOM for app cabs are clearly marked outside arrivals. Fast, convenient if there is no surge — check the app before you exit to see current pricing.
- Hotel/airport transfer arranged in advance: If you are staying at one of the airport hotels (Hyatt Regency, Trident etc.) between flights, their shuttle sometimes covers both terminals — confirm with the hotel.
One thing that confuses travellers: Air India does offer a 'Transit Assistance' facility for passengers connecting via Mumbai on interline bookings, but this is for passengers on a single Air India (or Star Alliance partner) booking — not for those holding separate IndiGo and Air India tickets. If both flights are on one PNR with an interline agreement, Air India's transit desk at T2 can sometimes assist; call Air India's contact centre to confirm what is covered before travel.
Baggage re-check rules — what actually happens with your bags?
The baggage question is the most operationally important and the most commonly misunderstood.
If your IndiGo domestic and Air India international are on SEPARATE tickets: IndiGo will only tag your bag to Mumbai (BOM). You collect your bag at T1 baggage claim, carry it to T2, and re-check it with Air India at T2 departures. Air India will then tag it to your international destination. You are responsible for the physical transfer of your bag between terminals and for re-check timelines (Air India's check-in closes typically 60–75 minutes before departure for international flights — verify on your booking).
If both flights are on a SINGLE interline booking (one PNR): Your bag can potentially be checked through from your origin city to your final international destination in one go, with the airline managing the transfer at BOM. This requires both carriers to have an interline baggage agreement and for the booking to be recognised as a through-journey. IndiGo and Air India do have some interline arrangements — but confirm with the booking agent or airline that your specific itinerary supports through-check baggage before you assume it does.
Practically: unless you have explicitly confirmed through-baggage at check-in and have a single claim tag to your final destination, assume you are collecting and re-checking at T1/T2. Build the time in accordingly.
What if my IndiGo domestic flight delays and I miss my Air India international?
This depends entirely on whether the two flights are on the same ticket or separate tickets:
- Same PNR / interline booking: Air India (as the operating carrier on the second leg) is responsible for re-protecting you. They must put you on the next available Air India flight to your destination at no extra charge. Go to the Air India transfer desk or ticket counter and state you missed your connection due to the inbound delay — do not book a new ticket in a panic.
- Separate tickets: Air India has no obligation to protect you. You are a late check-in passenger who missed the check-in deadline. In this scenario, your options are: (a) buy a new ticket at whatever the current last-minute price is, (b) claim from your travel insurance if your policy covers missed connections (most comprehensive policies do — check the terms), or (c) accept the loss and rebook at your own cost. This is the single strongest reason to book domestic feeder + international on one itinerary.
For anything to do with your rights if an Indian carrier delays you on the domestic leg, DGCA's passenger rights framework applies — airlines operating scheduled services in India must provide meals/refreshments for delays over 2 hours and hotel accommodation for overnight delays. This does not help you catch a missed international connection, but it does mean you are not entirely without recourse for the domestic disruption itself. See also: IndiGo Delhi terminal guide 2026 for the parallel situation at DEL.
Bottom line
Connecting IndiGo domestic at Mumbai T1 to Air India international at T2 is one of those itineraries that looks fine on paper and falls apart in practice if you have given yourself only 90 or 120 minutes. Three hours is the realistic minimum; 3.5 is comfortable. Book as a single interline itinerary where possible — it means your bags are protected, your connection is protected, and you are not paying out of pocket if IndiGo delays. If you must book on separate tickets, get comprehensive travel insurance with missed-connection cover before you travel. For overall Mumbai airport orientation and other routes through BOM, check FlightGPT's route pages, and compare fares for your feeder and international legs on FlightGPT to build the most time-efficient itinerary.
Frequently asked questions
How long does the transfer from Mumbai T1 to T2 take?
The road journey is 10–20 minutes, but the full process — exiting T1 arrivals, taking a cab, entering T2, re-checking baggage and clearing security plus immigration — takes 1.5–2 hours on a good day and 2.5–3 hours on a busy day. Allow a minimum of 3 hours between your domestic arrival and international departure at Mumbai.
Is there a free shuttle bus between Mumbai T1 and T2?
Mumbai does not have a dedicated free public inter-terminal shuttle in the way Delhi does. Most passengers take a prepaid airport taxi (typically ₹200–₹350 from the T1 prepaid booth) or an Ola/Uber from the designated pickup zone. Verify current options on the Mumbai International Airport (MIAL) website.
Can IndiGo check my bag through to my international destination if I am connecting to Air India at Mumbai?
Only if your IndiGo domestic and Air India international flights are on a single interline booking (one PNR) and the carriers support through-baggage for your specific routing. If they are on separate tickets, IndiGo will only tag your bag to Mumbai — you collect it at T1 and re-check it yourself at Air India T2. Always confirm through-baggage at check-in; do not assume it is automatic.
What happens if my IndiGo flight delays and I miss my Air India international at Mumbai?
If both are on the same PNR (interline booking), Air India must re-protect you on the next available flight at no charge. If they are on separate tickets, Air India has no obligation — you would need to purchase a new ticket or claim on travel insurance. This is the key reason to book both legs on a single itinerary if at all possible.
Does Air India close check-in before the flight? How much time do I need at T2?
Air India typically closes international check-in 60–75 minutes before departure and boarding gates close 20–30 minutes before departure. Verify the exact times on your Air India booking confirmation, as they vary by destination. For long-haul flights to the US, UK or Europe, the check-in closure is often 75 minutes before departure — plan accordingly when calculating your T1–T2 connection time.
Which terminal at Mumbai airport does Air India Express use?
Air India Express (the low-cost arm of Air India) primarily operates from T1 at Mumbai for its domestic and short-haul international routes, while Air India full-service international flights use T2. If your onward flight is Air India Express, confirm the terminal on your booking — the Air India brand family now has both T1 and T2 operations at BOM.