yogi,

You can also purchase SQ tickets online via travelocity, orbitz, and many other online travel tools in addtion to the SQ website. However I don't recommend you make your purchases with travelocity & orbitz as they tend to quote the high prices that are directly quoted by the airline itself plus the potential of paying an extra $5-$10 for using their services. As Guy Betsy said earlier, your best bet will be to search for TAs located in an Asian community or the ones that specialize in Asia Travels.