Another shakeup in Canada’s holiday air travel market as Swoop and Sunwing are partnering on vacation packages from select cities.

The move will allow passengers in Edmonton, Abbotsford, Winnipeg, London, and Hamilton to book Sunwing packages but fly on Swoop flights to sun destinations in Mexico. More than half of Swoop’s winter schedule is bound for destinations in the southern United States and Mexico, including Mazatlan, Los Cabos, Perto Vaillarta, and Cancun.

“Saving our customers time and money by providing convenient, direct flight services from their local airport has always been a key priority for us,” said Andrew Dawson, Sunwing’s President of Tour Operations in a statement. “Sunwing Airlines already offers flights to over 45 of the most popular sun destinations from over 30 departure airports coast to coast.”

The move comes at a time of turmoil in Canada’s vacation market. Air Canada is poised to buy all of Sunwing rival Transat’s shares. If the move is approved by regulators, the combined company would take a stranglehold on a number of key markets in the highly competitive budget sector.

At the same time, uncertainty surrounding the Boeing 737 Max’s return to service forced Sunwing to drop its four aircraft from this year’s winter schedule, constraining capacity to sun destinations. Transat, with its growing fleet of Airbus aircraft, was not affected by the crisis.

“It’s a privilege to be entrusted with carrying Sunwing travellers onboard Swoop flights to our extensive network in Mexico,” said Steven Greenway, President, Swoop. “Partnering with a well-respected tour operator who shares our vision of making travel affordable and more accessible is a welcome opportunity for Canadians who want to travel more.”

Swoop is a subsidiary of Westjet, which is in the process of finalizing a takeover by Onex.