Non-stop Gatwick-Toronto services will restart on Friday (24 July), with Air Transat operating the route three-times-weekly on Mondays, Wednesdays and Fridays.
Then on Sunday (26 July), Air Transat will restart flights from Manchester and Glasgow to Toronto.
Manchester-Toronto will depart twice-weekly on Thursdays and Sundays and Glasgow-Toronto weekly on Tuesdays.
Flights will be operated by Air Transat’s brand new Airbus A321neo LR aircraft, offering two classes – economy and club.
New health and safety measures will be implemented to meet Covid flying requirements.
There is currently no travel corridor agreement between the UK and Canada, meaning any passengers returning to the UK from Canada will be required to self-isolate for 14 days on arrival.
Canada has, however, been granted an exemption from the Foreign Office’s global advisory against all non-essential travel.
Adrian Keating, Air Transat commercial director UK and Ireland, said: “Offering flights from airports across the UK has always been an integral part of Air Transat’s strategy, which is why we have immediately committed to Gatwick, Manchester and Glasgow.
"Air Transat is looking forward to flying Canadians on its transatlantic flights from this weekend, and to welcoming British travellers on board in the near future when restrictions are eased.”
Keating added Air Transat was currently finalising details of a new trade engagement programme, which will be rolled out to UK trade partners over the coming weeks.
“The UK travel trade has always been a vital partner for Air Transat," he said.
"As we return to the skies, that is true more than ever. We will be unveiling a range of new incentives to strengthen that partnership in the months ahead.”