Economy, Fly-only, checked baggage and in-flight meals extra.
Some flights already sold out but still some available (eg out 7 june, return 14 june)
I've put full Ts & Cs below
Good option for cheap family holiday also Marina Bay Sands hotel/casino with park/pool on roof
Universal Studios Singapore is open with quite a few good rides
Search the hotel sites for Resort World Sentosa which is next door to Universal Studios if planning a family holiday
Full T & Cs
Conditions apply. Advertised fares are for sale until 12 May 2012 (2359hrs - GMT+10) or until seats sell out and must be purchased on line. Fares are for return travel in economy, checked baggage not included - return purchase is required. Fares are available for travel from Sydney or Gold Coast to Singapore and comprise the price of the air ticket, associated taxes, levies and surcharges, and a credit card service fee of A$6.50 per guest segment valid as on 08 May 2012. Taxes and surcharges are subject to change due to currency fluctuations. Fares exclude optional charges, such as service fees that may be levied for buying tickets at ticket offices, travel agencies or by telephone. Fares are based on availability and apply for travel from 05 June 2012 through 07 July 2012 between Sydney and Singapore, and from 13 June 2012 to 07 July 2012 between Gold Coast and Singapore. Outbound travel must take place from Sydney to Singapore from 05 June to 13 June 2012, or from Gold Coast to Singapore from 13 June to 18 June 2012. Other fares apply for travel outside this period. Promotional fares are for FLY fares only and do not apply for FLYBAG and FLYBAGEAT.
No cheap fares left going to Singapore and only 2 days left for return!