Since 2006, the trains operating on all Skytrain lines are Crystal Movers manufactured by Mitsubishi Heavy Industries.

All stations are equipped with platform screen doors, are air-conditioned and have plasma displays indicating the arrival time of the next train.

[5] On 17 March 2006, the rolling stock was replaced with the current Mitsubishi Crystal Mover System.

[6] On 24 February 2015, services between Station B and E (Terminal 2 to 3 and vice versa) were suspended to make way for the construction of Jewel Changi Airport.

[4] The system consists of seven stations (A-South, A, B, C, D, E and F), each giving the name of the nearest boarding gate for easy recognition for passengers.

[4] Full operations finally began in November 2007 when the lines serving Terminal 3 opened.

[4] Exterior-wise, the Crystal Mover vehicles are painted in a base livery of silver and grey, blending in with the color scheme of the airport terminal buildings.

When a train enters the ORP signal aspect section, the on-board ATP device creates the ORP control pattern in a manner which protects the fixed-point stop control pattern by the on-board ATO.

[4] The system also uses a by-pass operation between Terminals 2 and 3, where trains are placed under synchronous control so that they depart and arrive at each corresponding station at the same time.

To increase the system capacity of the Skytrain, six new train cars have been purchased which subsequently entered service in 2019.