21 hours of sailing to Le Havre and 17 hours to Cherbourg. The buses in Ireland offer regular commuter services as well as high-speed express coaches between Dublin and other major cities. Plan ahead when traveling by bus because round trip tickets are only marginally more expensive than one way trips. By Train Taking the train is always a great option for travelers throughout Europe. The packages provided by the railways are virtually unbeatable.
Train travel is also extremely flexible.
Remember, Ireland is connected with the Eurail system, so if you have a pass, you can move freely throughout Europe. If you are planning to do any type of extensive travel of this type, you really need to purchase a Eurail pass. If you plan to limit your travels to Ireland, you may want to consider one of the passes offered by Irish rail. Irish Rover covers rail travel in both the Republic and Northern Ireland for five days. Irish Explorer is a pass that permits unlimited travel within the Republic for five days.