Xi'an Xianyang International Airport (IATA: XIY, ICAO: ZLXY) is an international airport serving the city of Xi'an, the capital of Northwest China’s Shaanxi province, as well as the whole Guanzhong area. Covering an area of 12 square kilometres (4.6 sq mi), Xi’an Airport has four terminals: T1, T2, T3, and T5. The total terminal building area exceeds 1.1 million square meters, making it one of the largest passenger airports in China, it is also the largest airport in Northwest China, and the second largest airport in Northern China. The airport was the hub for China Northwest Airlines until the company was merged into China Eastern Airlines in 2002. Xi'an Airport is also the hub for Joy Air and Hainan Airlines. Xi'an Xianyang International Airport is a Skytrax 4-star airport.

In 2024, the airport handled 47,039,000 passengers, making it the busiest airport in northwest China. It is the ninth busiest airport nationwide. Xi'an Xianyang International Airport was also the nation's 9th busiest airport in terms of cargo traffic and the 7th busiest airport by traffic movements.

On 20 February 2025, Terminal 5 officially opened to public and will commence operation.