Join Date: Feb 2007
Location: Sydney, Australia
Programs: UA, QF, VS, AA, US, HH, SPG
Posts: 974
As said above - waitlist may never clear. However, while you need the miles in your account to WL they are not removed until (and if) the WL clears so you can still use the miles to book an alternative (confirmed award) or WL more than one flight. If you can find availability on another (second choice) date/time/route you can get SQ to link your WL to this confirmed booking. You can also use your SQ points to book *A flights for your desired route (if available - no WL allowed on *A fights) but I am not sure if SQ can then link your SQ-only waitlisted flights - but ask the call centre if this looks like an option.