There are many connections to Cork Airport from UK airports and via various European Airports, such as Amsterdam Schiphol; you can see the direct flights from European destinations here, which airline has connections, and which days they fly:
https://www.corkairport.com/destinations/book-flights
Cork Airport is not that far outside the city centre, so it’s convenient to take a bus or a taxi. We unfortunately do not have Uber in Ireland. Bus Éireann (“Irish Bus”) Routes 226 and 226A provide a frequent service linking Cork Airport to Cork City Centre/Cork Bus Station but in the evening are less frequent. Cork Airport to Parnell Place Bus Station (main bus station) in the City Centre takes approximately 20 minutes.
DUBLIN AIRPORT:
The following airlines have direct flights between North America and Dublin: Norwegian Air International, Icelandair, British Airways, WOW air, Norwegian, Air Canada, American Airlines, Finnair, Lufthansa, KLM, SWISS
https://www.dublinairport.com/
If arriving in DUBLIN AIRPORT, you can get one of the following modes of transport direct to Cork City:
AIRCOACH: https://www.aircoach.ie/ Book online to go from Dublin Airport to Cork City Centre; buses are regular and go overnight also. The bus usually takes around three and a half hours direct to Cork, but depends on traffic and time of day.
GOBUS: https://www.gobus.ie/ Book online to go from Dublin Airport to Cork City Centre; buses are regular and go overnight also.
The Irish National Bus Service, Bus Éireann, has services from Dublin Airport to Cork City Centre: http://www.buseireann.ie/
Alternatively, get a bus into Dublin City and get a TRAIN to Cork; there are direct trains (a little over 3 hours) with Iarnród Éireann/Irish Rail: http://www.irishrail.ie/
GETTING TO UNIVERSITY COLLEGE CORK:
https://www.ucc.ie/en/discover/visit/getting-here/
Please note that on Bus Éireann buses, you cannot pay by credit card so you will need Euros – on routes 205 and 208 that go from the city centre to UCC, you can only buy the ticket on the bus. It is €2.40 to UCC, no return fares available, only single journeys. On city-town and inter-city routes you can buy the ticket from the Bus Station Travel Centre or machines by cash or card. The 208 bus stops just before the main gates of UCC and the 205 stops at the same stop and also continues on up College Road and the first stop on College Road is directly across from one of the entrances to University College Cork campus.
You can walk to the university campus in about 20 minutes from the city centre, 30 minutes walk from the Bus Station Parnell Place.