As Asia recovers from the recession, the casino resort in Singapore has been key for the Las Vegas Sands’ business, he added.
The Singapore project, the Marina Bay Sands, which was originally expected to cost around $3.2 billion, has also suffered massive cost overruns.
The chairman of the world’s No 2 casino operator also said the company could complete all its planned five projects on Macau’s Cotai strip within five years.
The firm -- which raised $2.5 billion from the listing of its Macau unit, Sands China, in late November -- plans to build five properties on the Cotai strip, a swathe of reclaimed land some Macau developers have touted as the next Las Vegas strip.
Those properties, including two that are halfway through construction, would complement two existing casinos in Macau, one of which is the Venetian Macau, the world's largest casino.
Sands competes in Macau with Wynn Macau, Galaxy Entertainment Group, SJM Holdings, Melco Crown Entertainment and MGM Mirage.
Adelson said he was confident of the market recovery as the nature of business would take its course.
“Nothing keeps me awake at night because I believe in the cycle of business….and I got to make sure I’m prepared to go forward.”