United Airlines and Air Canada have announced a joint business agreement for the Canada-US transborder market, building on their long-standing alliance. According to the announcement, the arrangement will give more flight options and better flight schedules to customers traveling between the two countries. Customers will be able to connect to 38 codeshare destinations in the US and eight of the most popular cities in Canada — all while enjoying the benefits of the carriers’ MileagePlus and Aeroplan loyalty programs. Mark Galardo, senior vice president of network planning and revenue management at Air Canada, said the agreement marks a new phase in the evolving relationship “that will speed the recovery from the pandemic and strengthen both carriers.” It will also, he said, enable the carriers to optimize their hubs and schedules and to broaden their global network connectivity. Patrick Quayle, senior vice president of global network planning and alliances at United, said that as international travel continues to recover, “this expanded partnership will provide an enhanced experience for all transborder travel.” The airlines have been authorized to form an antitrust-immune US-Canada joint venture since 1997. They attempted to establish that joint venture in 2011 but didn’t go through with it after the Canadian government forbade joint operations on 14 high-demand routes that the bureau contended would have diminished competition as a result of the partnership.