T2, T3 and now T1?
"Flights may arrive at either Terminal 2 or Terminal 3. Click here to find out the status of your flight. Information on the arrival terminal will be available two hours before the flight’s estimated time of arrival." So says the SQ website, but SQ37 (the non-stop from LAX) arrived at gate D41 yesterday - which is in T1.
Passengers with checked-in luggage had to schlep to T2 to collect their bags and clear customs.