Long Thanh International Airport (IATA: none, ICAO: VVLT) is an international airport under construction in Long Thành District, Đồng Nai Province, Vietnam, approximately 40 km (25 mi) east of Ho Chi Minh City. It will be the second airport to serve the Ho Chi Minh City metropolitan area, after the existing Tan Son Nhat International Airport. It is being built as an alternative to the existing airport, in order to relieve its increasing traffic, demand and congestion, as it could not be further expanded due to urban growth around it. The Government of Vietnam approved its construction on 4 January 2021. Construction began the next day on 5 January, and its first phase was scheduled to be finished by September 2025, but now it is expected to be finished by the first half of 2026. The airport will serve over 100 million passengers and five million tonnes of cargo annually when built to the maximum designed capacity, making it the largest airport in Vietnam, Southeast Asia and one of the largest in the world. The project is the most expensive infrastructure project in Vietnam's history. Once open, both airports will operate together. The national carrier, Vietnam Airlines, is suggested by the project consultants as the only Vietnamese carrier to operate flights from Long Thanh, while other airlines will wholly stay at the existing airport.

The project is being developed in four phases, of which the first phase at a cost of about US$ 4.6 billion, with an area of around 5,580 ha (13,800 acres), a capacity of 25 million passengers and 1.2 million tonnes of cargo per year, one terminal and one 4,000 m (13,000 ft)-long and 60 m (200 ft)-wide runway, was officially approved by the Prime Minister of Vietnam, Nguyễn Xuân Phúc, on 11 November 2020, with completion planned in 2025, which will now be completed in the first half of 2026.