Air Canada has added narrowbody Airbus A321XLR flights to its transatlantic route from Montréal Pierre Elliott Trudeau International Airport (YUL) to Lyon Saint Exupéry Airport (LYS) in the southeast of France next year. The type will temporarily replace the larger widebody twinjets that typically serve this route, but flyers should be aware of a major caveat: this change will only apply for a month.