You can travel to Ibiza by plane from Ireland or the UK and the flight takes between two and a half and three hours depending on the airline you use and the airport.
Aer Lingus and Ryanair operate flights from Ireland and British Airways, Thomson, Easyjet, Jet 2 and Ryanair operate flights from the UK. There are also a number of charter flights leaving from British airports and these can be booked through tour operators offering package holidays such as Thomson and Thomas Cook. There have been recent complaints of drunk passengers causing disruptions on certain Ryanair flights to Ibiza lately and an Aer Lingus or British Airways flight may be quieter.
You can also take a ferry to Ibiza from mainland Spain. The closest mainland port town is Denia, which offers two crossings per day by hydrofoil (two and a quarter hours to Ibiza Town) and two crossings per day by ferry (four and a half hours to San Antonio). From Barcelona there are on average four ferry crossings per week, lasting around nine hours, and from Valencia there is one hydrofoil crossing every day, lasting three and a quarter hours. From Alicante there is a daily hydrofoil service to San Antonio, lasting approximately three hours. There is also the option of catching a ferry to Majorca from Ibiza. See http://www.ferryto.ie/ports/Ibiza.html for more details.
Ibiza airport is located just 7.5 km from the capital, and is well connected to most of the resorts by public transport. It is 20 km from San Antonio and 16 km from Santa Eulalia. The airport has plenty of restaurants, cafes and shops and baby changing facilities. There is also a small children’s play area. If you have booked a package holiday you will be met at the airport by your travel representative. If you have booked your own accommodation, check to see if your hotel arranges an airport shuttle service, otherwise you will need to rent a car (car rental agencies are located in the Terminal), take a bus or a taxi. If you decide to take a taxi but have not brought your own car seat you may wish to book a taxi with one attached. You can do so from Ibiza Airport Transfers. If you do not wish to book a car seat you can travel with your infant or toddler on your lap however this is highly dangerous in case of an accident. You can also rent a car seat (and plenty of other baby and toddler equipment) from Kids in Ibiza and this will be delivered to you for a fee of €15.00 or you can collect it at their store.
Jet Lag – Ibiza is only one hour ahead of Ireland and the UK so your baby should have no trouble acclimatising to the change. If you are staying for a short time you could keep your baby or toddler on home time to help him or her adjust.