Dublin Airport’s traffic issues are due to outdated road access, but Metro Dublin and Island Rail can resolve this by connecting the airport to key areas, improving accessibility and reducing congestion.

The capacity challenge at Dublin Airport is less about air traffic and more about inadequate road access. The airport's connectivity is hindered by an outdated cross junction and a perpetually congested roundabout that links to the motorway. These access points were identified for upgrades over 15 years ago, but the necessary improvements have yet to materialise, leaving the airport struggling with traffic flow and accessibility issues that impact its overall efficiency.

Dublin Airport's capacity issues are further compounded by the absence of a rail connection, leaving passengers reliant on congested roads. However, major rail projects like Metro Dublin and Island Rail have the potential to significantly transform airport accessibility. Metro Dublin, once completed, will provide a direct, efficient link between the airport and the city, reducing road congestion and offering a faster alternative for the average person. Island Rail can complement this by connecting regional areas to the airport, creating a comprehensive rail network that drastically improves connectivity and eases traffic pressure around the airport. These projects could be game-changers for Dublin Airport's long-term infrastructure.

Traffic congestion at Dublin Airport is a longstanding issue, primarily due to the limited road access. The only entry points—an overly congested roundabout and an outdated cross junction shared by both cars and buses—are major bottlenecks. Despite being identified for upgrades more than 15 years ago, no improvements have been made, resulting in severe delays and frustrations for travellers. This lack of efficient access not only impacts airport operations but also affects the overall travel experience.

​Metro Dublin offers a clear solution to this problem by transforming Dublin Airport into a National Transport Hub. The planned metro line will connect the airport to Glasnevin, a major interchange railway station, and Swords Central, providing a direct and efficient link to key areas in and around the city. This rail connection would significantly reduce road congestion, offering a fast, reliable alternative for both commuters and passengers traveling to and from the airport.

Old Terminal Dublin Airport

Additionally, Island Rail can play a crucial role in improving the airport’s accessibility on a national level. By connecting Dublin Airport to major cities like Belfast and Cork, Island Rail would create a seamless link between the airport and regional areas, reducing reliance on road transport and further easing traffic. Together, Metro Dublin and Island Rail have the potential to drastically improve connectivity, making Dublin Airport a key national transport hub and alleviating its current capacity issues.