The launch was originally scheduled for early Wednesday morning, and then postponed again to early Friday. The satellite is headed for geostationary orbit, about 22,300 miles above Earth's surface, and will provide video and data services to customers across the Asia-Pacific region, SES representatives said.
The Falcon 9's first stage had supported the OTV-5 mission in September 2017, according to a SpaceX press kit.
The Falcon 9 rocket soared off Launch Complex 40 at 12:45 a.m.; the launch was delayed 16 minutes because of gusty winds.
Kim Jong Un 'fires North Korea's top three military generals'
South Korea's Blue House on Monday quashed suggestions a formal end to the Korean War could be announced at the Trump-Kim summit. No had formerly overseen the military's financial issues as the chair of the Second Economy Commission, Kim said.
Two space tourists who have already paid "a significant deposit" were supposed to be launched to lunar orbit later this year, SpaceX announced last year. The first stage is back on the launch pad Sunday for its second flight.
Instead, the moon flight will now take place in the middle of 2019 or later, the Wall Street Journal reported, though the company founded by Tesla (TSLA) CEO Elon Musk hasn't officially updated its timetable for the moon launch. The SES satellite will be one of the company's largest.
SpaceX has landed these boosters 25 times, and reflown them on a dozen occasions.