Sanya Hongtangwan International Airport

Sanya Hongtangwan International Airport is an airport planned to be built to serve the city of Sanya in Hainan Province, China. It would be located on an artificial island in Hongtang Bay, about 20 km west of Sanya. Construction began in 2017, and the airport was expected to be opened in December 2020. However the same year, the project was suspended pending a new environmental assessment following complaints from Chinese environmental agency Friends of Nature. In 2020, part of the construction of the artificial island was deemed illegal, and further land reclamation was halted. In the new plans, the land reclamation was reduced by 0.9 km2.

The original plans were for 29.95 km2 of sea airport used, 23.99 km2 land area, 4 runways, 3 terminal buildings and corresponding supporting auxiliary area.