Rottnest Island Airport (IATA: RTS, ICAO: YRTI) is a small airport for light aircraft, situated about 800 m (2,600 ft) from the main settlement at Thomson Bay, Rottnest Island and 10 nautical miles (19 km; 12 mi) northwest of Fremantle. Daily air services operate to the island. In the past these have been from Perth Airport, but in recent years have been mainly from Jandakot.

The single 1,290 m × 18 m (4,232 ft × 59 ft) runway runs east–west and is situated behind Thomsons Bay and south of Government House Lake. Part of the lake was resumed for the construction of the airport runway. The Oliver Hill railway line runs south of and parallel to the runway.

The airport opened in November 1930 and has been used regularly since then for private and small commercial operations, ferrying workers and holiday makers between Perth and the island.