Ryanair has announced five new routes from Cork Airport to eastern Europe.
The airline will fly from Cork to the Polish cities of Warsaw, Gdansk, Wroclaw and Krakow, and to Lithuanian capital Vilnius.
Hungarian-based carrier WizzAir currently operates the same routes from Cork.
Ryanair's Deputy Chief Executive Michael Cawley said he expected the routes to do very well.
He said that since Ireland took part in the European Championships in Poland there has been significant growth in the number of Polish people interested in visiting Ireland.
The new routes will begin on 5 November.
Fine Gael TD Jerry Buttimer said the expansion of Ryanair's service from Cork will significantly boost traffic to and from the airport.
He said the move further builds the case for Cork Airport to develop its own business plan, separate to that of Dublin.