Ireland occupies a convenient stepping stone location between the USA and Europe. Even though there are more ways than one to get to Ireland, flying is certainly the easier option!
Ireland has three international airports: Cork, Dublin and Shannon. Most flights into Ireland come from Europe. London Heathrow and Gatwick offer great connecting flights from all over the world. Aer Lingus and Ryanair both operate reasonably priced fares to and from here. You can get an idea of the price of airfares on Skyscanner.
You can catch daily transatlantic and international flights to and from Dublin or Shannon. Cork and Dublin used to be serviced by daily domestic flights but this doesn’t exist anymore. Instead, you can catch a train from either city centre or hop on the Aircoach which connects both airports. You can find up-to-date information on flight arrivals and departures on the websites for Shannon Airport, Cork Airport and Dublin Airport.
Make sure that you have your passport and all the necessary documentation with you!
Brittany Ferries operates a seasonal service between Roscoff and Cork while a ferry runs between Dublin and Holyhead. From Rosslare, you can sail to Fishguard, Roscoff or Cherbourg.
The national bus company, Bus Éireann, offers an extensive bus system across the country. Dublin Bus services Dublin City Centre and the surrounding areas. You can also hire from Avis, Hertz, Budget, Europcar, and Thrifty at the airports.
The Irish rail service, Iarnrod Éireann, offers frequent and relatively quick services between the major cities. This map shows all of the stations that it serves.