Ryanair is to start flying from Dublin to Warsaw and Stockholm.
The announcement of flights to the Polish and Swedish capitals means the airline will have 20 new routes from Dublin in 2007.
Both routes will start flying in February.
Michael Cawley, Ryanair deputy chief executive, said: "The launch of 20 low fare Ryanair routes from Dublin, starting December will enable passengers to travel to 71 destinations throughout Europe.
"Ryanair's continued expansion is great news for passengers who will enjoy our lowest fares to even more destinations. The arrival of Ryanair means just one thing for all passengers, whether in Dublin, Warsaw or Stockholm - lower fares, better service, more flights and a welcome saving from the high fares."
Other new routes that Ryanair will open between December and February include Oslo, Trapani in Sicily, Seville and Tampere in Finland.