Singapore Changi Airport is on the Mass Rapid Transit (MRT) train network.
The MRT train station at Changi is beneath and between Terminal 2 and 3. Transfer to/from Terminal 1 is via the SkyTrain inter-terminal shuttle.
The MRT service links the airport station with Tanah Merah station. Transfer there for trains to the city.
MRT trains run every 10-15 minutes from around 5:30 until just after 23:00.
Journey time between central Singapore (City Hall interchange) and Changi is about 30 minutes.
MRT travel and station information is available online.
The fare between Changi Airport and City Hall is $1.60. There is an additional $1 deposit for the electronic ticket which is refundable on arrival at your destination station.
All fares in Singapore dollars.