The Aerotrain is a complimentary service that shuttles passengers between the Main Terminal Building and the Satellite Building. The 143,404 sq. metre Satellite Building accommodates international flights departing and arriving at KLIA and features a wide array of duty-free shops and prestige brand boutiques for your shopping pleasure.

Starting on an elevated track from the Contact Pier (serves as the domestic terminal and international of KLIA), the aerotrain travels into a tunnel that runs underneath an airport taxiway and then travel into the Satellite Building.

The journey between these terminals takes under two minutes and the Aerotrain operates at three to five minutes intervals.

This three-car 250-passenger capacity train is able to transport 3,000 passengers per hour, per direction - with a maximum speed of 56 km/h (35mp/h).