Gimpo International Airport an extension to Seoul Station which opened in December 2010. Seoul Subway Line 9 also links the airport to the Gangnam area. For many years, the airport was served by the Gimpo Line, a railway line that no longer exists. In the 1990s, Seoul Subway Line 5 was extended to Gimpo. Gimpo International Airport Gimpo International Airport ( ), commonly known as Gimpo Airport (formerly Kimpo International Airport), is located in the far western end of Seoul, some west of the Central District of Seoul. Gimpo was the main international airport for Seoul and South Korea before being replaced by
Gimpo International Airport two passenger terminals, and one cargo terminal. In 2016, the ten carriers with the largest percentage of passengers flying into, out of, or through Gimpo International Airport are as follows: Korea Airports Corporation (KAC) has its headquarters on the airport property. The Aviation and Railway Accident Investigation Board (ARAIB) has its FDR/CVR Analysis and Wreckage Laboratory on the property of the airport. When the predecessor agency Korea Aviation Accident Investigation Board (KAIB) existed, its CVR/FDR and wreckage laboratory was located on the airport property. On 23 March 2007 the AREX airport express line started operations to Incheon International Airport, with