MetroLink is a proposed high-capacity, high-frequency rail line running from Swords to Charlemont, linking Dublin Airport, Iarnród Éireann, DART, Dublin Bus and Luas services.

It will be serving crucial destinations including Swords, Dublin Airport, Ballymun, the Mater Hospital, the Rotunda, Dublin City University and Trinity College.

MetroLink will provide faster reliable journey times, with much of the 19 kilometre route running underground.