Rail services between Dublin and Derry involve an interchange at Central Station Belfast. While Iarnród Éireann jointly operate and market Dublin-Belfast services, Belfast-Derry services are the responsibility of Translink-Northern Ireland Railways. There are eight services daily between Dublin and Belfast and seven services between Belfast and Derry. Iarnród Éireann has no immediate plans to run through services from Dublin to Derry which is served several times a day on a direct bus route from Dublin. In addition, the Department supports two air services a day between Dublin and Derry, with a journey time of 50 minutes.