Indira Gandhi International Airport (DEL), commonly known as IGI Airport, is India's busiest airport and the primary gateway to the country's capital region. Located in southwest Delhi, DEL handles a vast volume of domestic and international traffic and serves as the primary hub for IndiGo, Air India, and other Indian carriers connecting New Delhi with destinations across South Asia, the Middle East, Europe, and beyond.
Indira Gandhi International Airport (DEL) is located in the Palam area of southwest Delhi, approximately 16 kilometers from the city center. Named after India's former Prime Minister, IGI Airport is the country's busiest airport by total passenger numbers and one of the most important aviation hubs in South Asia.
The airport operates three terminals. Terminal 1 primarily serves domestic low-cost carriers. Terminal 2 is used for some domestic operations. Terminal 3 — one of the largest airport terminal buildings in the world by floor area — handles all international operations and premium domestic services, and is the primary facility for international visitors to India.
DEL's position in northern India makes it a natural hub for connections between Europe, Central Asia, South Asia, and Southeast Asia. The airport has undergone dramatic transformation over the past two decades and continues to grow rapidly alongside India's extraordinary domestic aviation expansion.
Delhi's aviation history stretches back to the 1930s when Safdarjung Airport served as the city's primary facility. The modern Palam Airport (later renamed Indira Gandhi International Airport) became operational in the 1960s and has been progressively expanded since.
The most transformative development was the opening of Terminal 3 in 2010, which replaced the older facilities with a world-class facility designed to handle tens of millions of passengers annually. T3 was built at extraordinary speed — completing the core structure in approximately 37 months — and won international recognition for its scale and construction achievement.
The airport continues to expand with additional terminal facilities and runway infrastructure to serve India's rapidly growing aviation market.
Indira Gandhi International Airport operates three main terminals:
Terminals 1 and 3 are not within walking distance — a free inter-terminal bus operates between them. Allow at least 2–3 hours for a domestic-to-international connection involving terminal changes.
IndiGo is India's largest airline and operates an extensive domestic and growing international network from DEL. Air India — India's national carrier — also maintains a significant presence at IGI, serving long-haul routes to Europe, North America, Australia, and the Middle East.
Other major carriers operating at DEL include Emirates, British Airways, Lufthansa, Singapore Airlines, Qatar Airways, Thai Airways, and a broad range of Asian and Middle Eastern airlines.
DEL connects New Delhi with over 100 international destinations and a comprehensive domestic Indian network serving cities across the subcontinent.
Terminal 3 at DEL offers a comprehensive range of passenger amenities including duty-free shopping, diverse dining options, and a variety of airline lounges. Air India's domestic and international lounges serve business class passengers, and several other airlines operate contract lounges within T3.
Retail at T3 includes Indian artisanal products, international brands, and a broad duty-free selection. Dining options range from traditional Indian cuisine to fast food and international alternatives. Wi-Fi is available throughout the terminals. Medical facilities, currency exchange, and left luggage services are also available.
Indira Gandhi International Airport is well connected to Delhi and the broader NCR region:
DEL offers extensive multi-level parking facilities adjacent to Terminal 1 and Terminal 3. Short-stay and long-stay options are available at varying rates. Valet parking is available at Terminal 3.
Given the airport's large scale, allow time to navigate between parking areas and terminals. Online pre-booking of parking is available through the DIAL (Delhi International Airport Limited) website.
Security procedures at IGI Airport are thorough and can take significant time during peak periods. Arrive at least 3 hours before international departures and 2 hours for domestic. The security process at Indian airports requires a pre-boarding pass check at terminal entry in addition to standard security screening.
If connecting between international and domestic flights at different terminals, allow at least 3 hours minimum — the inter-terminal bus journey and re-check-in process take considerable time.
The Delhi Metro Airport Express is the most reliable transport to central Delhi. Road traffic in Delhi can be severe and highly unpredictable, making taxis a variable option especially during peak commuting hours.
Indira Gandhi International Airport is a critical asset for India's economy, facilitating both international tourism and the movement of business travelers, workers, and cargo between India and the rest of the world. As the country's busiest airport, DEL serves as the primary international gateway for the Delhi NCR region — home to over 30 million people — and a hub for connecting domestic traffic.
India's extraordinary aviation market growth — driven by a rapidly expanding middle class and aggressive expansion by low-cost carriers — has made DEL one of the fastest-growing major airports in the world by passenger numbers.
IGI Airport is undergoing significant expansion, including the development of an expanded Terminal 1 and new infrastructure to increase capacity toward 100+ million passengers annually. A fourth runway is also planned as part of the long-term master plan.
These investments reflect India's ambitions to build a world-class aviation infrastructure commensurate with its growing economy and population. DIAL continues to invest in passenger experience improvements alongside capacity expansion.
Indira Gandhi International Airport is South Asia's most important aviation hub and India's primary international gateway, reflecting both the country's enormous domestic aviation market and its growing international connectivity. Its role spans domestic hub, international gateway, and transit airport for passengers connecting within South Asia.
DEL's position in northern India makes it a natural hub for services between Europe and South Asia, between the Gulf and India, and between South Asia and Southeast Asia. India's position as one of the world's most rapidly growing aviation markets ensures that DEL's importance will continue to increase significantly over the coming decades.
Within Delhi's airport system, IGI's three terminals form a single integrated campus. There are no significant alternative commercial airports serving the Delhi NCR region.
In practical terms, DEL can be understood as:
Airports within approximately 60 miles of Indira Gandhi International Airport that may provide additional scheduled commercial, regional access.
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Terminal 3 (T3) handles all international flights at Indira Gandhi International Airport, as well as premium domestic services. Terminal 1 serves domestic low-cost carriers.
The Delhi Metro Airport Express (Orange Line) connects Terminal 3 directly to New Delhi Railway Station and Connaught Place in approximately 20 minutes. Taxis and rideshare are also available, though journey times can vary significantly with traffic.
Arrive at least 3 hours before international departures. Security and immigration procedures at Indian airports include a pre-boarding pass check at the terminal entrance, which can add time during busy periods.
IndiGo is India's largest carrier and offers the most extensive domestic network from DEL. Air India provides the widest international long-haul network including to the US, UK, Europe, and Australia. Many international carriers also offer direct services from DEL.