Air Transat is expanding transatlantic services to Toronto and Montreal for summer 2020.
The airline is doubling frequency on the Gatwick-Toronto route to twice daily.
The number of Gatwick-Montreal flights will rise from three to five a week.
The airline’s new 199-seat Airbus A230neo long range single aisle aircraft will operate many of the flights.
Air Transat is also raising capacity on routes from Glasgow and Dublin to Toronto.
An Airbus A310 is being replaced it with an A330 from Glasgow five times a week. A mix of A330 and A321neo LR services will run from Dublin five times a week.
The airline will also continue to offer A330 flights five times a week from Manchester to Toronto.
As a result, more than 30 direct flights will be available every week from the UK and Ireland to destinations across Canada.
Economy class fares to Toronto for summer 2020 start at £341 return.
The airline’s UK and Ireland commercial director Adrian Keating said: “From four departure points across the UK and Ireland, passengers can travel to a wide range of Canadian cities that each offer a unique and unforgettable holiday experience.
“With our updated schedule and brand-new A321neo LR aircraft operating many of our flights, Air Transat really is unlocking the magic of Canada from the moment you step on board.”