Dublin Airport is the only major European airport not serviced by train services. In the absence of rail services, bus routes connect the airport with the major train stations in Dublin City Centre, namely Connolly Station & Heuston Station.

As of early 2026, Dublin Airport does not have a train station located on-site. While there have been decades of plans for a "MetroLink" or an extension of the DART (Dublin Area Rapid Transit) system to the airport, travelers currently rely on bus services or taxis to reach the city's main rail hubs. If you are looking to take a train from Dublin to other parts of Ireland, you must first take a bus (such as the Aircoach or the Dublin Express) to Dublin Heuston Station (for travel to the south and west, like Cork or Galway) or Dublin Connolly Station (for travel to the north and east, like Belfast or Sligo). The "Dublin Airport Central" area serves as a bus terminus, but no tracks currently lead to the terminals. The proposed MetroLink station, which would be located underground between Terminals 1 and 2, is currently in the construction and planning phase with a projected opening date in the early 2030s. Therefore, when looking at a map today, you will not find a station called "Dublin Airport Train Station"; instead, you should search for "Bus to Heuston" or "Bus to Connolly" to begin your rail journey across the Emerald Isle.