Delhi IGI Airport Terminal Transfer Guide: T1, T2, and T3 Free Shuttle Bus, Metro, Minimum Connection Times, and Baggage Rules (2026)

Quick Summary

• Primary Update: Delhi International Airport Limited (DIAL) operates a 24/7 complimentary inter-terminal shuttle bus between Terminal 1 (T1) and the Terminal 2/3 (T2/T3) complex, separated by an 8-kilometer airfield perimeter, alongside a direct 5-minute sheltered pedestrian walkway connecting T2 and T3.
• Transit Impact: Passengers holding separate tickets across different terminals must physically reclaim all checked luggage, exit landside, obtain a free shuttle voucher from the DIAL transfer counter, and re-clear security at the departure terminal.
• Traveler Advice: Allow a minimum connection time of 3 hours for domestic-to-international transfers involving T1 to T3, and 3.5 to 4 hours for international-to-domestic transfers due to mandatory first-port customs baggage clearance.

Navigating flight connections at Delhi’s Indira Gandhi International Airport (DEL) presents distinct logistical challenges due to the physical separation of its passenger facilities. While Terminal 2 and Terminal 3 sit adjacent to each other within a unified terminal zone, Terminal 1 lies nearly 8 kilometers away on the opposite side of the active runway network.

Understanding how to navigate between these facilities—whether utilizing DIAL’s complimentary shuttle service, booking authorized app-based cabs, or navigating airside versus landside security corridors—is vital to avoiding missed connections, particularly during peak operating hours and winter fog schedules.

Delhi Airport Terminal Architecture and Airline Allocations

Delhi Airport separates domestic low-cost carriers, full-service carriers, and international flights across three distinct passenger terminals. Airline distributions determine transfer requirements:

• Terminal 1 (T1 Integrated Domestic): Following extensive modernization and capacity expansion, T1 serves exclusively domestic operations for budget carriers. The terminal processes high-frequency domestic departures and arrivals primarily operated by IndiGo (select flight ranges) and SpiceJet. T1 is entirely self-contained with its own landside access roads, multi-level parking, and direct connection to the Delhi Metro Magenta Line.
• Terminal 2 (T2 Domestic): Positioned adjacent to Terminal 3, T2 operates as a domestic facility handling overflow domestic traffic for IndiGo (specific four-digit series) and select regional operations. Because T2 shares the southern airfield campus with T3, moving between them does not require boarding highway shuttles.
• Terminal 3 (T3 Integrated Terminal): Delhi’s flagship multi-level terminal manages all international departures and arrivals across all foreign and domestic airlines (including Air India, IndiGo international flights, Emirates, Singapore Airlines, Qatar Airways, British Airways, Lufthansa, and United). Additionally, T3 handles domestic full-service operations for Air India and select domestic flights operated by IndiGo.

Because airline terminal assignments are tied to specific flight numbers rather than carrier brands alone, travelers must check their exact departure and arrival terminals on their e-tickets prior to touchdown.

Inter-Terminal Transit Options: Shuttle, Walkway, and Cabs

Connecting between terminals requires selecting the appropriate transfer mechanism based on your specific terminal pair.

                    DELHI IGI AIRPORT TERMINAL COMPLEX

+-----------------------+                    +----------------------------+
|      TERMINAL 1       |                    |     TERMINAL 2 & 3         |
|  (Integrated Domestic)|                    |   (Domestic & International|
+-----------+-----------+                    +--------------+-------------+
            |                                                             |
            | <========== 8 km Highway Perimeter ==========>              |
            |     - DIAL Free Shuttle Bus (Every 20 min)                  |
            |     - App Cabs / Pre-paid Taxi (15-25 min)                  |
            |                                                             |
            |                                +--------------+-------------+
            |                                | T2 <-> T3 Covered Walkway  |
            |                                | 300m / 5-7 min walk        |
            +--------------------------------+----------------------------+

1. Terminal 2 to Terminal 3: Sheltered Pedestrian Walkway

Transfers between T2 and T3 do not require motorized transit. A dedicated, climate-controlled, covered pedestrian walkway connects the arrivals and departures forecourts of both terminals.

• Distance: Approximately 350 meters.
• Transit Time: 5 to 7 minutes on foot.
• Accessibility: Fully paved, equipped with escalators, elevators, and luggage trolley access throughout. Security guards are stationed along the corridor to assist connecting passengers.

2. Terminal 1 to Terminal 2 / Terminal 3: DIAL Complimentary Shuttle Bus

DIAL operates a round-the-clock inter-terminal shuttle bus service connecting T1 with T2 and T3. The service utilizes air-conditioned low-floor Delhi Transport Corporation (DTC) buses equipped with dedicated internal luggage racks.

• Cost: Free of charge for passengers holding a valid onward flight ticket or connecting boarding pass. Non-ticketed visitors or transit passengers without proof of travel pay a nominal local fare of ₹25 to ₹30.
• Frequency: Buses depart every 20 minutes, 24 hours a day, 365 days a year.
• Travel Time: 20 to 30 minutes, subject to airport perimeter road traffic conditions.
• Where to Catch at T1: Outside T1 Arrivals, near Pillar 10 and 11. Passengers must first stop at the DIAL Inter-Terminal Transfer Desk inside the arrivals hall to validate their onward ticket and receive a complimentary bus coupon.
• Where to Catch at T3: Forecourt staging lane outside T3 Arrivals, near Pillar 10. Visit the transfer desk in the arrivals baggage hall or ground transport area before heading outside.
• Where to Catch at T2: Directly outside the T2 arrivals exit. Passengers can either board the shuttle at T2 or take the 5-minute walkway to the primary T3 shuttle staging hub.

3. Pre-paid Taxis and App-Based Cabs (Uber / Ola)

When connection windows are tight and a shuttle departure is not immediately imminent, private cabs provide point-to-point transit:

• Travel Time: 15 to 20 minutes via the Central Spine Road and Northern Access Road.
• Pick-up Locations: Multi-Level Car Parking (MLCP) pick-up structures at T3 and dedicated app-cab pick-up zones at T1 and T2.
• Fares: Standard app-cab fares generally range between ₹250 and ₹450, depending on vehicle category and real-time peak surge pricing.

4. Delhi Metro Public Transit Considerations

While both T1 and T3 have direct Delhi Metro stations, they sit on separate corridors:

• Terminal 1 is served by the Terminal 1 IGI Airport Metro Station on the Magenta Line.
• Terminal 3 and Terminal 2 are served by the IGI Airport Metro Station on the Airport Express (Orange Line).
• There is no direct rail connection linking T1 and T3 without interchanging at stations like Hauz Khas or New Delhi Railway Station, which takes 45 to 60 minutes. Therefore, the metro is not recommended for inter-terminal transfers. Travelers should always use the complimentary DIAL shuttle bus or a road taxi.

Delhi Airport Terminal Transfer Logistics & Connection Metrics

Minimum Connection Times (MCT) Explained

Meeting airline Minimum Connection Times (MCT) is essential for avoiding forfeiture of tickets and denied boarding. Official MCT thresholds vary sharply based on whether baggage must clear customs or cross terminals.

Domestic to International Connections

• Same Terminal (T3 to T3 on Single PNR): If you arrive on an Air India domestic flight into T3 and depart on an Air India or Star Alliance international flight out of T3 on a unified ticket, your baggage is tagged through to your final destination. The official MCT is 90 minutes. Passengers follow the purple "International Transfers" signs, pass through domestic-to-international transfer security, and proceed directly to international boarding gates.
• Cross-Terminal (T1 or T2 to T3): If your domestic flight lands at T1 (e.g., IndiGo or SpiceJet) and your international connection departs from T3 (e.g., Emirates, Air India, or Qatar Airways), the realistic operational MCT is 180 minutes (3 hours). International check-in counters close strictly 60 to 75 minutes prior to departure. Accounting for a 30-minute deplaning and baggage claim window, a 15-minute wait for the shuttle, a 25-minute drive, and security queues, any buffer under 3 hours creates substantial risk of missing the flight.

International to Domestic Connections (The First-Port Customs Rule)

Under Central Board of Indirect Taxes and Customs (CBIC) regulations, India enforces the first-port-of-entry customs rule:

1. Every passenger entering India from abroad must clear immigration at their initial port of entry (Delhi T3).
2. Regardless of whether your baggage tag displays your final domestic city (such as Mumbai, Bengaluru, or Chennai), you must physically retrieve all checked baggage from the international reclaim carousels at T3.
3. You must take your baggage through the Customs Green Channel (for goods within duty-free limits) or Red Channel (for dutiable items, excess gold, commercial goods, or currency declarations).
4. Only after clearing customs can you proceed landside. If your domestic flight departs from T1 or T2, you must haul your luggage to the shuttle bus counter, transfer across the airfield, and check your bags in afresh at your onward carrier's desk.
5. Required Buffer: For an international-to-domestic connection involving a terminal change, maintain an absolute minimum connection window of 210 to 240 minutes (3.5 to 4 hours).

Traveler Logistics Guide

Connecting smoothly across Delhi Airport requires executing specific procedural steps upon arrival. Follow this practical, terminal-by-terminal checklist.

Step 1: Secure Your Free Shuttle Bus Coupon

Do not exit into the general public arrivals forecourt without obtaining your shuttle coupon if you intend to use DIAL’s complimentary transfer:

• At Terminal 1 Arrivals: After collecting your bags, locate the DIAL Inter-Terminal Transfer Counter situated inside the arrivals baggage claim hall near the exit doors. Present your inbound boarding pass stub and your printed or digital onward flight ticket. The staff will stamp or issue a complimentary paper bus token.
• At Terminal 3 Arrivals: Locate the Inter-Terminal Transfer Desk situated in the center of the arrivals hall past customs clearance, before exiting into the public greeting area. Present your onward boarding pass or ticket to collect your transfer pass.
• Proceed to the Shuttle Bay: Follow overhead signage marked "Inter-Terminal Shuttle Bus" to Pillar 10 at T1 or Pillar 10 at T3. Hand your coupon to the bus coordinator and board.

Step 2: Manage Check-in and Bag Drop Deadlines

Airlines enforce non-negotiable check-in closure windows at Delhi Airport:

• Domestic Check-in / Bag Drop: Counters close strictly 60 minutes before scheduled departure (IndiGo, Air India, SpiceJet). Boarding gates close 25 minutes prior to departure.
• International Check-in / Bag Drop: Counters close 60 to 75 minutes before departure depending on the airline. Boarding gates close 20 minutes prior to departure.
• If your inbound flight experiences delays leaving you with under 75 minutes before a cross-terminal domestic departure, bypass the shuttle bus immediately and hire a dedicated app-cab or pre-paid taxi to minimize transit time.

Step 3: Navigating Transit Lounges and Layover Rest Areas

If you face an extended connection window between terminals:

• Terminal 3 Airside Transit Hotel: The Holiday Inn Express operates inside Terminal 3, accessible from both the international transit area (for international-to-international connections without clearing Indian immigration) and the domestic departures wing.
• Lounge Facilities: Encalm Privé and Encalm Lounges operate across T3 international and domestic departures, offering shower suites, hot buffets, and quiet work zones. Terminal 1 features a fully operational Encalm Lounge in its newly expanded departures mezzanine.
• Left Luggage / Cloakroom Services: If you have an 8-to-12 hour daytime layover and wish to visit central Delhi via the Airport Express Metro, a 24/7 Left Luggage facility operates at the Airport Connect building linking T3 to the IGI Airport Metro station. You must present your passport or government ID and onward flight ticket to store bags.

Frequently Asked Questions

Can I transfer from Terminal 1 to Terminal 3 without exiting the airport landside?

No. There is no airside transfer tunnel or sterile bus corridor linking Terminal 1 to Terminal 2 or Terminal 3. Terminal 1 is physically isolated on the northern edge of the airport estate. All passengers moving between T1 and T2/T3 must exit landside through the arrivals hall, board the road shuttle bus or taxi across the 8-kilometer perimeter highway, enter the departure terminal through security access gates, and clear security screening afresh.

Do I have to pay for the DIAL inter-terminal shuttle bus?

The shuttle bus is completely free of charge for any traveler who presents a valid inbound boarding pass and an onward connecting flight ticket (digital or printed) departing within 24 hours. You must obtain a free bus coupon at the DIAL Inter-Terminal Transfer Counter inside the arrivals hall prior to boarding. Passengers without valid connecting flight documentation must pay a standard transit fee of approximately ₹25 to ₹30.

My flights are on separate tickets across T1 and T3. Will my bags be transferred automatically?

No. When flights are booked under separate reservations (different PNRs)—such as an IndiGo flight into T1 and an Air India or foreign carrier flight out of T3—the airlines have no interline baggage transfer agreements. You must wait at the baggage carousel at T1, claim all checked luggage, transport your bags on the inter-terminal shuttle to T3, and check them in at the T3 departures desk before the counter cut-off time.

If I arrive on an international flight at T3 and connect to a domestic flight at T3 on Air India, do I still need to collect my bags?

Yes. Under Indian customs regulations, all passengers arriving from foreign stations must clear customs at their first port of entry into India. Even if your Air India ticket is a single booking (e.g., London to Delhi to Ahmedabad) and your baggage is tagged through to Ahmedabad, you must clear immigration at T3, collect your bags from the international belt, walk through Indian customs, and drop your bags at the domestic transfer belt or domestic check-in counters.