WestJet's summer schedule is adding 72 more weekly flights out of YYC, mainly frequency increases on existing routes. YYC-MEX, YYC-DEN, and YYC-YKF are the new flights that will start up during this time.
This increase makes YYC once again the largest WestJet hub (Toronto was for a bit).
http://westjet2.mediaroom.com/index.php?s=43&item=1316