Taiwan is about 145 kilometers away from mainland China, about 1,040 kilometers from Japan to the north, about 544 kilometers to the southwest from Hong Kong, and about 320 kilometers from the Philippines. It is located at the transportation hub of East Asia and the Western Pacific, flying with Hong Kong, Manila and Naha. The flight information region is connected to the international route and has a moderate geographical position. However, because of the large number of mountains in Taiwan, the lack of land, the narrowness of the land, and the particularity of the military strategic position, the development of civil aviation is limited in Taiwan.

In 2017, a total of 65.98 million passengers entering and leaving Taiwan's airports (an average of 181,000 passengers per day), an increase of 4.3% compared with 2016. Among them, international passengers (including Hong Kong and Macao) had 44.03 million passengers, an increase of 8.1% over 2016; The number of cross-strait passengers was 10.44 million, a decrease of 7.2% compared with 2016; the number of passengers on domestic routes was 11.1 million, an increase of 2.3% compared with 2016; the number of transit passengers was 410,000, a decrease of 5.7% compared with 2016.