The incursion is the largest in a year and comes as the US warns against an "increasingly aggressive China".
Beijing views Taiwan as a breakaway province.
The latest Chinese mission involved 18 fighter jets, as well as four bombers, which can carry nuclear weapons, two anti-submarine aircraft and an early warning aircraft, Taiwan stated.
China has carried out regular flights over the international waters between the southern part of Taiwan and the Taiwanese-controlled Pratas Islands in the South China Sea in recent months.
Monday's incursion also saw the jets fly into the ADIZ to the southwest of Taiwan near the Pratas Islands.