Airport rail link Airport), Brussels National Airport railway station (which opened in 1958 and serves Brussels Airport) and Frankfurt Airport regional station (which opened in 1972 and is one of the two railway stations that serve Frankfurt Airport). Integration with intercity services has produced alliances where airlines sell air tickets that include the connecting rail service. Central Europe has seen integration of high-speed rail into airports, with domestic and international TGV and ICE services from Charles de Gaulle Airport in Paris and Frankfurt Airport. Because of this, many airport railway stations have received IATA codes. Yet another option for airports is to use
Gunsan Airport Gunsan Airport Gunsan Airport (, ) is an airport serving Gunsan, a city in the North Jeolla Province in South Korea. In 2011, 172,327 passengers used the airport. It shares its runway with Kunsan Air Base, which uses the same IATA and ICAO codes. The routes between Seoul and Gunsan were opened in August 1970, but the airport was closed in 1974 due to the first oil shock, but the construction of the civil harbor facility started in November 1991 and reopened on December 14, 1992. On December 14, 1992, Korean Air (Korean Air) opened a new route to Seoul,