Are you a gambling man littlejimmy112? I checked some sample dates for Mihin Lanka (Sir Lankan Government owned airline) from SIN to MLE and came up with sub $500 fares. (http://www.mihinlanka.com).

Alternatively, you could try getting a seperate flight from SIN to CMB and then to MLE. I know Emirates flies the CMB-MLE route. One other option is getting to Trivandrum (TRV) and hopping a flight from there to MLE. I recall that flight only being a couple hundred bucks, return.

Don't forget that you will also be spending a boat load of cash in the Maldives.

Lastly, you didn't mention where you were originating fon the ???-SIN flight. There might be some options from there.