Tata SIA Airlines Limited, operating as Vistara, is an Indian full-service airline, based in Gurgaon (Gurugram), with its hub at Indira Gandhi International Airport. The carrier, a joint venture between Tata Sons and Singapore Airlines, commenced operations on 9 January 2015 with its inaugural flight between Delhi and Mumbai. The airline had carried more than two million passengers by June 2016 and as of April 2023, has an 8.7% share of the domestic carrier market, making it the 2nd largest domestic airline, behind IndiGo. The airline serves 50 destinations with a fleet of Airbus A320neo, Airbus A321neo and Boeing 787-9 aircraft.

Indira Gandhi International Airport is the primary international airport serving Delhi, the capital of India, and the National Capital Region (NCR). The airport, spread over an area of 5,106 acres (2,066 ha), is situated in Palam, Delhi, 15 km (9.3 mi) southwest of the New Delhi Railway Station and 16 km (9.9 mi) from New Delhi city centre. Named after Indira Gandhi (1917–1984), the former Prime Minister of India, it is the busiest airport of India in terms of passenger traffic since 2009. It is also the busiest airport in the country in terms of cargo traffic. In the financial year of 2023-24, the airport handled 7.36 crore passengers, the highest ever in the airport's history. As of 2024, it is the tenth-busiest airport in the world, as per the latest rankings issued by the UK-based air consultancy firm, OAG. It is the second-busiest airport in the world by seating capacity, having a seating capacity of over 36 lakh seats, and the busiest airport in Asia by passenger traffic, handling over 6.55 crore passengers in 2023. In fact, it is routinely one of the busiest airports in the world, according to the Airports Council International rankings.