Originally Posted by
MSPeconomist
I would have said two hours to allow for problems.
SQ should keep the bags (checked through) at SIN if everything is on a single ticket/PNR, assuming that all segments are SQ operated. If not, the airport has some baggage storage facility, but I don't know the details.
I'd agree with the 2 hour mark. On my last visit, outbound passport control and security queues were lengthy (but efficient), so I appreciated the extra time. If you have PP and an extra 15-20 minutes, I would recommend a visit to the Airport Wellness Oasis to use the fish spa.