http://www.anna.aero/2017/10/12/mont...ng-hub-in-s17/

Montreal, with 10% of Air Canada’s overall departing seat capacity in S17, is the Canadian national carrier’s third largest airport operation after Toronto Pearson (27% of departing seat capacity) and Vancouver (12%). These figures include operations from Air Canada Rouge and Air Canada Express. When referring to OAG schedules, Air Canada has increased seat capacity from Pearson by 6.0% this summer and 9.2% from Vancouver. However the growth strategy for the airline from Montreal is more significant, with it being the only major hub for the airline to be reporting double-digit growth in S17. It should be noted that Calgary has only seen a 1.0% increase in one-way seats this summer from Air Canada.