Many passengers who pass through Dublin Airport are still getting used to Terminal 2, which was opened in 2010.
But is there any need to construct a third terminal? Or should we be focusing on the country's other airports instead?
We heard from businessman Ulick McEvaddy, who has been planning for Terminal 3 for over two decades, and Paul O'Kane, chief communications officer with DAA.
Listen to the interview in full by pressing the play button on this page.