Operational Travel Alert
- Affected Hubs & Transit Corridors: Chhatrapati Shivaji Maharaj International Airport (BOM / VABB) — Terminal 1 (Santacruz Domestic) and Terminal 2 (Sahar Integrated Terminal). Major domestic trunk routes affected include Mumbai connections to Delhi Indira Gandhi (DEL), Bengaluru Kempegowda (BLR), Chennai (MAA), Kolkata (CCU), Hyderabad Rajiv Gandhi (HYD), Ahmedabad (AMD), Goa Dabolim/Mopa (GOI/GOX), Jaipur (JAI), Lucknow (LKO), and Kochi (COK). Operating carriers impacted by phased terminal consolidations and split flight series include IndiGo (6E), SpiceJet (SG), Akasa Air (QP), Air India (AI), and Air India Express (IX).
- Advisory Severity: High Operational Airport Advisory (Terminal Mismatch & Missed Departure Risk). Mumbai International Airport Limited (MIAL) and airline operators have reallocated significant domestic flight banks from Terminal 1 (Santacruz) to Terminal 2 (Sahar) to facilitate structural demolition and phased reconstruction of the Terminal 1 complex. Ground handling and airport security report passenger misdirections daily; travelers who arrive at the wrong terminal face a 5.5 to 7.0-kilometer road transfer navigating acute Western Express Highway and Sahar Road traffic, incurring 30 to 50 minutes of transit and triggering strict 45-minute departure gate offloading.
- Traveler Action: Re-verify your confirmed departure terminal (
T1orT2) directly on your digital boarding pass or airline mobile application before departing for the airport. Remember that all Air India, Air India Express, and international flights operate exclusively from Terminal 2 (Sahar), while IndiGo, SpiceJet, and Akasa Air operate split domestic schedules. If you inadvertently arrive at Santacruz T1 for a T2 flight, immediately proceed to Mumbai Metro Line 3 (Aqua Line) at CSMI Airport Domestic Station for a 3-minute subterranean ride to CSMI Airport International Station, or board the complimentary MIAL inter-terminal electric shuttle bus outside T1 Departure Gate 2.
Quick Summary
- Primary Update: Chhatrapati Shivaji Maharaj International Airport (CSMIA / BOM) has reallocated numerous domestic flight banks between Terminal 1 (Santacruz) and Terminal 2 (Sahar) under the multi-year Terminal 1 Master Plan redevelopment.
- Transit Impact: Terminal 1 and Terminal 2 sit on opposing sides of Mumbai's intersecting active runways (RWY 09/27 and 14/32) with no pedestrian airside connectivity. Surface road transfers take 30–50 minutes during peak hours, and check-in counters close strictly 45 minutes prior to scheduled departure (60 minutes for baggage drop).
- Traveler Advice: Check your exact terminal code (
BOM T1vsBOM T2) on your boarding pass prior to hailing airport cabs; ensure Uber/Ola drivers take the correct elevated access ramp; and maintain a minimum connection time of 150 minutes (2.5 hours) if transferring between T1 and T2.
Operational Advisory Summary: Mumbai Airport Two-Campus Layout & T1 Reconstruction
Chhatrapati Shivaji Maharaj International Airport (CSMIA) operates as one of the world's most single-runway-constrained commercial aviation hubs, handling over 950 aircraft movements and nearly 150,000 passengers daily. Unlike airports where terminals are co-located in a contiguous apron ring, CSMIA is geographically divided into two entirely separated terminal campuses situated across the intersection of Runway 09/27 and Runway 14/32:
- Terminal 1 (Santacruz East): Historically dedicated to low-cost domestic carriers (IndiGo, SpiceJet, Akasa Air). Under MIAL's phased terminal modernization master plan, sections of the aging T1 complex are undergoing structural demolition and ground reconstruction, prompting the migration of heavy domestic flight schedules to Terminal 2.
- Terminal 2 (Sahar, Andheri East): The flagship, 4-level integrated terminal housing 100% of international operations, all Air India and Air India Express flights, and a rapidly expanding proportion of domestic operations by IndiGo, Akasa Air, and SpiceJet.
Mumbai CSMIA (BOM) Terminal Campus Architecture
[ TERMINAL 1 (T1) - SANTACRUZ EAST ]
• Domestic LCC Hub (IndiGo / SpiceJet / Akasa)
• Access via Western Express Highway (WEH) / Nehru Rd
• Metro: Line 3 (CSMI Airport Domestic Station)
│
│ ◄── Surface Road Distance: 5.5–7.0 km ──►
│ (MIAL Free Shuttle: 25–40 mins)
│ (Taxi / Auto / Cab: 30–50 mins)
▼
═════════════════ Intersecting Runways (RWY 09/27 & 14/32) ════════════
▲
│ ◄── Subterranean Metro Line 3: 3 mins ──►
│
[ TERMINAL 2 (T2) - SAHAR / ANDHERI EAST ]
• ALL International Departures & Arrivals
• Air India, Air India Express, Selected LCC Domestic
• Access via Sahar Elevated Access Road (SEAR) from WEH
• Metro: Line 3 (CSMI Airport International Station)Because there is zero airside or walkable pedestrian connection between Terminal 1 and Terminal 2, a passenger who arrives at the Santacruz terminal for a Sahar departure cannot quickly cross the active runways. Missing a departure due to terminal confusion is categorized by airlines as passenger no-show under standard conditions, resulting in severe rebooking penalties or forfeiture of airfare.
Comprehensive Airline Terminal Allocations at Mumbai CSMIA
The table below outlines the current terminal assignments across all scheduled commercial carriers operating at Mumbai Chhatrapati Shivaji Maharaj International Airport:
| Airline & Code | Flight Number Series / Destination Type | Operating Terminal | Check-in Concourse / Gate Access | Critical Passenger Operational Notice |
|---|---|---|---|---|
| Air India (AI) | All Domestic Flights (AI 400–999, AI 1000+) | Terminal 2 (T2) | Level 4, Check-in Islands A, B, C | 100% of Air India operations depart from Sahar T2. Zero flights depart from T1. |
| Air India (AI) | All International Flights | Terminal 2 (T2) | Level 4, Check-in Islands C, D, E | Direct immigration & customs clearance at Level 4 / Level 3. |
| Air India Express (IX) | All Domestic & International Flights | Terminal 2 (T2) | Level 4, Check-in Island F | Operates entirely from T2. Passengers arriving at T1 must transfer immediately. |
| IndiGo (6E) | Domestic Flights (Split Schedule Series) | Terminal 1 (T1) | Departures Hall, Check-in Counters 1–45 | Flights departing T1 cover designated domestic trunk and regional sectors. Verify boarding pass. |
| IndiGo (6E) | Domestic Flights (6E 5000–5999 & Connecting Banks) | Terminal 2 (T2) | Level 4, Check-in Island J & K | Specific domestic flights connecting to international banks operate out of T2. |
| IndiGo (6E) | All International Flights (6E 1000–1999) | Terminal 2 (T2) | Level 4, Check-in Island K & L | Strict check-in closure 60 minutes prior to scheduled departure. |
| Akasa Air (QP) | Selected Domestic Trunk Routes | Terminal 1 (T1) | Departures Hall, Check-in Counters 50–65 | Verify flight confirmation voucher 24 hours prior to scheduled departure. |
| Akasa Air (QP) | Reallocated Domestic & All International | Terminal 2 (T2) | Level 4, Check-in Island G | International flights and overflow domestic banks operate from T2. |
| SpiceJet (SG) | Domestic Routes (SG 100–899) | Terminal 1 (T1) | Departures Hall, Check-in Counters 70–85 | Low-cost domestic core bank. Confirm gate via flight status displays. |
| SpiceJet (SG) | Domestic Flights Connecting to Gulf / Intl | Terminal 2 (T2) | Level 4, Check-in Island H | Dedicated check-in desks on Level 4. |
| Foreign Carriers (Emirates, Qatar, Singapore, BA, Lufthansa, etc.) | 100% of Foreign Flag Carriers & Overseas Airlines | Terminal 2 (T2) | Level 4, Dedicated Airline Check-in Islands | All international customs, immigration, and security gates operate at T2. |
Surface Road Navigation & Airport Cab Drop-Off Guidelines
One of the primary causes of passenger misdirection in Mumbai is navigating the road network connecting the Western Express Highway (WEH) to the two disparate terminals.
Road Access Decision Tree for Mumbai CSMIA
Driving Southbound / Northbound on WEH (Western Express Hwy)
│
┌────────────────┴────────────────┐
▼ ▼
[ HEADING TO TERMINAL 1 ] [ HEADING TO TERMINAL 2 ]
• Exit at Santacruz Flyover • Take SAHAR ELEVATED ACCESS ROAD
• Follow Western Express Service • Dedicated 4-lane elevated ramp
Road directly to T1 Departures bypassing Sakinaka/Chakala
• Drop-off: Ground Level Ramp • Drop-off: Level 4 Departures Ramp
• Caution: Cannot access T2 from • Caution: No direct exit to T1
the T1 forecourt road without full surface loop (6 km)1. Navigating to Terminal 1 (Santacruz)
- Road Axis: Western Express Highway (WEH), Santacruz East, Navpada, Vile Parle East.
- Cab Booking Tip: When requesting an Uber, Ola, or traditional Kaali-Peeli taxi, select "CSMIA Domestic Airport Terminal 1 (Santacruz)". Never select generic "Mumbai Airport".
- Drop-off Point: Departures Elevated Forecourt, Terminal 1.
- Pitfall: If your driver ascends the Sahar Elevated Access Road flyover, you will be deposited at Terminal 2, requiring a 40-minute turnaround through Andheri East.
2. Navigating to Terminal 2 (Sahar, Andheri East)
- Road Axis: Sahar Elevated Access Road (SEAR) from WEH near Vile Parle/Andheri junction, or via Andheri-Kurla Road / Sakinaka from the Eastern Suburbs.
- Cab Booking Tip: Select "CSMIA International Airport Terminal 2 (Sahar)" in ride-hailing apps.
- Drop-off Point: Level 4 Departures Ramp (Gates 1 through 8). DigiYatra gates are operational at Gates 2, 4, 6, and 8.
Inter-Terminal Transit Protocols: Free Shuttle vs Metro Line 3 (Aqua Line)
If you arrive at the incorrect terminal campus, two primary transit mechanisms exist to ferry you between Santacruz (T1) and Sahar (T2):
| Transit Mode | Pick-up / Boarding Location | Drop-off Concourse | Frequency | Travel Time | Cost / Fare | Baggage & Boarding Requirements |
|---|---|---|---|---|---|---|
| Mumbai Metro Line 3 (Aqua Line) | CSMI Airport Domestic Metro Station (Underground concourse linked to T1) | CSMI Airport International Metro Station (Direct lift/escalator to T2 Level 2 & 4) | Every 6–8 minutes (06:00 to 23:00) | 3 to 4 minutes (Bypasses all street traffic) | ₹10–₹20 per ticket (Metro QR / Smart Card) | Must pass baggage security X-ray scanner at metro concourse. Fastest transfer method. |
| MIAL Electric Feeder Shuttle | Outside T1 Departures Gate 2 (Arrivals Curb Lane) | T2 Ground Transportation Center (Level 1, Bay 8/9) | Every 15–20 minutes | 25 to 45 minutes (Subject to WEH traffic) | Complimentary (Free) | Must present confirmed onward airline ticket / boarding pass showing departing terminal. |
| Prepaid Taxi / Kaali-Peeli | T1 Dedicated Taxi Staging Forecourt | T2 Level 4 Departures Drop-off Ramp | On demand (queue basis) | 30 to 50 minutes (Peak traffic bottlenecks) | ₹250–₹450 (Standard meter plus toll/airport surcharge) | No ticket inspection required, but susceptible to severe peak-hour road delays. |
| App-Based Cabs (Uber / Ola) | T1 Multi-Level Car Parking (MLCP) Level 2 | T2 Level 4 Departures Ramp | 5–12 minutes wait time | 30 to 50 minutes | ₹300–₹600 depending on surge pricing | High wait times during evening peak hours (17:00–21:30). |
Minimum Connection Times (MCT) & Through-Baggage Handling Rules
Passengers booking domestic-to-domestic or domestic-to-international connecting itineraries through Mumbai must observe strict Minimum Connection Times (MCT) enforced by MIAL and the Directorate General of Civil Aviation (DGCA):
- Domestic to Domestic (Within Same Terminal — T1 to T1 or T2 to T2):
- Minimum Connection Time: 60 minutes.
- Baggage is through-checked to final destination on single PNR itineraries.
- Domestic to Domestic (Inter-Terminal Transfer — T1 to T2 or T2 to T1):
- Minimum Connection Time: 150 minutes (2.5 hours).
- On separate ticket PNRs, travelers MUST collect checked baggage from baggage carousels, exit landside, transport luggage across terminals, and check in anew at the connecting carrier's counter.
- Domestic to International (T1 Domestic to T2 International):
- Minimum Connection Time: 180 minutes (3.0 hours).
- Travelers landing at T1 must reclaim checked luggage, clear arrivals, proceed to T2 via Metro Line 3 or MIAL shuttle, check bags at Level 4, and clear immigration and Central Industrial Security Force (CISF) security.
- International to Domestic (T2 International to T1 Domestic):
- Minimum Connection Time: 180 minutes (3.0 hours).
- Under Indian customs regulations, all passengers arriving on international flights must clear immigration at T2, collect all checked baggage for Customs examination at Level 1, exit the customs hall, and transport baggage to T1 for domestic re-check.
DGCA Passenger Rebooking Rights & Airline Misconnection Relief
The Directorate General of Civil Aviation (DGCA) under Civil Aviation Requirements (CAR) Section 3, Series M, Part IV governs passenger facilitation and airline compensation:
1. Single-PNR Through-Ticket Misconnections
If an airline (or code-share partner) issued a single booking reference connecting across terminals with a connection window meeting or exceeding published MCT, and an inbound flight delay results in a missed connection:
- The operating carrier is legally obligated to rebook the passenger onto the next available alternative flight at zero additional charge.
- If the alternative flight departs more than 4 hours later, the airline must provide complimentary refreshments, meals, and hotel accommodation (including ground transfers) if the delay extends overnight.
2. Separate PNRs / Wrong-Terminal Arrival "Rescue Fares"
If a passenger books independent tickets across separate airlines or accidentally arrives at the wrong terminal campus:
- Standard airline fare rules treat late arrival at the correct terminal as a passenger no-show once check-in closes (45 minutes before domestic departure; 60 minutes for baggage drop).
- Airline Facilitation Desks: Both IndiGo and Akasa Air maintain customer service kiosks at T1 Departure Gate 2 and T2 Level 4 (Near Gate 1). If you report to the desk at the wrong terminal at least 60 minutes prior to departure, staff can issue an urgent terminal-transfer alert, check for seats on subsequent banks, or rebook under nominal "Rescue Change Fees" (typically ₹1,500 to ₹2,500 plus fare difference) rather than charging full last-minute walk-up fares.
Frequently Asked Questions (FAQ)
How do I know whether my flight departs from Mumbai T1 or T2?
Inspect your airline confirmation SMS, email e-ticket, or web check-in boarding pass. The departure airport field will explicitly specify BOM T1 or BOM T2. Additionally, all Air India, Air India Express, and international flights operate exclusively from Terminal 2. If flying IndiGo, Akasa Air, or SpiceJet, check your specific flight number series on the carrier's mobile app or live flight status tracker 4 to 6 hours before departure.
How far is Terminal 1 from Terminal 2 at Mumbai Airport?
Terminal 1 (Santacruz) and Terminal 2 (Sahar) are separated by 5.5 to 7.0 kilometers of public surface roads circling the airfield perimeter. There is no walkable pathway. Road transfers via taxi or airport shuttle take 25 to 50 minutes depending on Western Express Highway traffic. However, Mumbai Metro Line 3 (Aqua Line) connects the two underground airport stations in only 3 minutes.
Is the inter-terminal airport shuttle bus free at Mumbai CSMIA?
Yes. MIAL operates a complimentary electric inter-terminal shuttle bus between T1 and T2 running every 15 to 20 minutes around the clock. To board, travelers must show a valid flight ticket or boarding pass proving they need to travel between the terminals. The pick-up point is outside T1 Departure Gate 2 (Arrivals curb) and at T2 Ground Transportation Center (Level 1, Bay 8/9).
What happens if I go to Santacruz T1 instead of Sahar T2?
If you arrive at T1 for a T2 departure, do not panic, but act immediately. If you have less than 75 minutes before departure, head straight down to the CSMI Airport Domestic Metro Station and take the Mumbai Metro Line 3 (Aqua Line) train one stop to CSMI Airport International Station. You will arrive inside the T2 complex within 3 to 4 minutes. If you miss your flight, report immediately to the airline customer assistance counter for emergency rescue rebooking.
Are DigiYatra biometric gates available at both Mumbai terminals?
Yes. DigiYatra facial recognition e-Gates are functional for domestic passengers at both Terminal 1 (Gates 1 and 2) and Terminal 2 (Gates 2, 4, 6, and 8). Utilizing DigiYatra typically reduces terminal entry queue times from 15–20 minutes down to less than 2 minutes.