But Local TD Alan Kelly is criticising the distribution of the flights.
Norwegian Air will begin route from Cork, Shannon and Dublin to smaller US airports in the greater New York, Boston and New England areas
The 19 weekly transatlantic routes start in July and will have fares starting from €69.
Today's announcement has been welcomed by the Government and Tourism Ireland.
But Labour's Deputy Kelly is accusing the Dublin Airport Authority of getting the majority of the flights in a bid to increase the business case for a third terminal.
