[2] Japanese authorities significantly upgraded the facility in 1929, along with a number of other airfields in Korea, to serve as stops for air service to Manchuria.

[1] Japan Air Transport (later as Imperial Japanese Airways) provided scheduled flights to Tokyo (beginning 1929), Fukuoka, Mukden, Dalian, Xinjing and other destinations from the airport during the 1930s.

[3][4] The much larger Kimpo Airfield opened to Japanese military traffic in 1943, and Yeouido was thereafter officially known as Keijo No.

[6] Northwest Orient Airlines operated Seoul-Tokyo flights in the 1950s, providing onward connections to North America.

Gimpo International Airport took over Yeouido's commercial flights in 1958, and Seoul Air Base took over its military functions in 1971.