"We have conducted a comprehensive review of our transatlantic operations between Ireland and North America and considering the grounding of the Boeing 737 MAX aircraft, we have concluded that these routes are no longer commercially viable", Mr Wood said.
"Since March, we have tirelessly sought to minimise the impact on our customers by hiring (wetleasing) replacement aircraft to operate services between Ireland and North America".
"Compounded by the global grounding of the 737 MAX and the continued uncertainty of its return to service, this has led us to make the hard decision". The strong passenger numbers that used these services at Shannon, however, proved once again the vibrant market there is for transatlantic flights in and out of this region.
Before the airline started its Hamilton service, Anders Lindstrom, director of communications for Norwegian's North America branch, told CBC that the flights would encourage Canadians to fly out of Canada instead of crossing the border to USA airports.
The grounding followed two fatal crashes of the 737 MAX which killed a total of 346 people.
The 2 crashes resulted in a reduction in manufacture from Boeing.
The decision will ultimately end all flights from Stewart, New York; Providence, R.I., and Hamilton, Ontario, and Dublin.
TUI CEO Fritz Joussen said, "Despite the challenging environment in 2019 to date, our underlying business remains robust, and we expect to deliver a solid performance in 2019, which, however, will not match the prior year's result, as expected due to the grounding of the 737 MAX".
The grounding has caused huge disruption for airlines, which have had to charter new planes to maintain flight schedules.
The Norwegian Air Transatlantic service will discontinue from September 15, 2019.
Flights travelling from the United States, as well as from Cork and Shannon in Ireland saw flights grounded in March and rerouted through Dublin.
"While there is plenty of choice in airline routes flying from Dublin, customers will suffer when it comes to competitiveness following the loss of Norwegian's transatlantic routes".
At least 80 administrative staff for Norwegian airlines based in Ireland will not be affected by the route closures.
The airline has requested compensation from Boeing for the grounded planes.