Prague, Budapest, Rome, Warsaw and Krakow would be a good start for Cork though Warsaw and Krakow are still around for another two weeks or thereabouts. How blessed we are!
How many times has Frankfurt been previously mentioned on these pages?! As long as Cork is stuck with two airlines that look on Cork with such a low priority Cork is going nowhere especially when Cork people wont complain and will not demand more destinations. Then, when destinations are offered from Cork one airline in particular is so busy milking it with high fares the passengers end up bussing it to Dublin for connections to save a few bob.
Enjoy the coach ride on the way back.