iFly simulates free fall from 12,000 to 3,000 feet. Each skydive lasts about 45 seconds. And you get two skydives for every session. The regular cost for two skydives is SG$89. But if you come during off-peak and super off peak times, you can pay as low as SG$69. They also have family and group packages as well.
How to get there
Take an MRT to the Harbour Front Station. A few levels above the Harbour Front Station in Vivocity is the Sentosa Monorail Station of the Sentosa Express. The ride will cost you SG$3.50 which includes use of the monorail within Sentosa and the trip back to Sentosa Station. Get off at the last station which is Beach Station. iFly Singapore is walking distance from there. You can actually see it from the station.