In the Northern Territory of Australia, Alice Springs is the starting point for many tours of Uluru (Ayers Rock). Tours often include visits to both Kata Tjuta (the Olgas) and Kings Canyon. Alice Springs holds the Henley-on-Todd Regatta each year, when the Todd River runs dry. Other attractions in the Red Centre, include the MacDonnell Ranges and the Simpson Desert. Flights are available to Alice Springs from the major centres in Australia, including Darwin, Sydney and Perth. Flight time from Sydney is approximately 3 hours. Flights to Australia are available with many airlines, including Qantas, Singapore Airlines and Malaysia Airlines, with a flight time of around 22 hours.