Fly into the main airport near Dublin and then use the bus system to get between different cities. If you are going straight to Dublin city from the airport, you can take the Airlink 747 or 757 line (7 euros a person one way); it took about 50 minutes though so it is slow.
Very convenient buses! You can take a bus from the airport to Dublin city or straight to Galway (or a few other locations). We went to Dublin city first. Then we caught a bus from Dublin City to Galway (about a 2.5 hour ride) and we took a bus from Galway to the Dublin airport.
The two main and best bus companies are GoBus and Citylink. They run pretty much every hour. One runs on the :15 and one runs on the :45 for non stop services and there are others that make stops.
The buses are nice, consistent and have wifi.
We stayed in Galway, which is a tiny town. If you stay in Galway, stay towards the center of town so you are in the main areas (near Eyre square or Shop Street). If you stay in Dublin, I would stay in the downtown area as well, perhaps not far from the Temple Bar and Trinity University.
You can take a tour and finish it off with a Guinness in their Gravity bar
We went during the day and it was packed and live music was of course playing. We got some food and a beer here and the atmosphere was great.
It’s such a nice area and the people are all so friendly!
City center park in Dublin
Cute street to walk down
Near the Spanish Arch
We did it with Lally Tours (20 euro student price for Burren and Cliffs day tour and that was perfect)
Has Christmas markets around the holidays
Very affordable and good with a variety of food options in Galway
Cute coffee place where you can also get breakfast and lunch
Good and cheap tapas spot
Cute cafe, good for breakfast
Nice spot for breakfast