Question: is there a train station in copenhagen airport

Answer: Yes, Copenhagen Airport, Kastrup Station (Danish: Københavns Lufthavn, Kastrup Station) is a railway station in Tårnby, Denmark, served by DSB's regional trains including the Oresundtrain network. The nearby Lufthavnen metro station is served by the Copenhagen Metro's line M2. The reconstructed railway station opened on 28 September 2007, and Metro service began the following month. The stations take their names from Copenhagen Airport, to which they are connected. It is linked to Ørestad station on the M1 line by DSB regional trains. It is located in fare zone 4.