Also on Saturday, the US and South Korean navies launched four days of joint drills off the east coast of South Korea.
The three aircraft carriers are expected to link up in the Sea of Japan later this week off the Korean Peninsula, a USA defense official tells Fox News.
The JCS said in a statement that the exercise was seeking to strengthen and expand the dissuasive strategy to prevent Pyongyang from carrying out further provocations in the form of arms tests.
The South Korean military will join a rare U.S. Navy exercise off the coast of the Korean Peninsula this weekend.
The military drills come as tensions remain sky-high as US President Donald Trump visits the region with the nuclear threat from North Korea dominating discussions.
The military also said another objective of the drills was to "show off the determination for strong retaliation and the firm military readiness", and the ROK and US militaries' ability to "repulse any kind of provocations by North Korea with overwhelming military power in case of contingency". The US 7th Fleet did not mention where in the western Pacific the three aircraft carriers would be conducting their exercises.
In addition to the USS Ronald Reagan, the USS Nimitz and the USS Theodore Roosevelt, the U.S. Navy also will mobilize 11 Aegis ships.
During the joint drill, the two countries will practice air operations, air artillery strikes and aircraft carrier escorts to test their ability to jointly carry out such operations.
APEC brings together 21 economies from the Pacific region.
The drills are scheduled to take place from November 11-14 in the East Sea, also known as the Sea of Japan in an ongoing naming dispute between South Korea and Japan.
South Korea's military announced its participation on Friday.