Hey, we're trying our best...
YYC gets a disproportionate amount of shite

, meaning inclement, weather that some other aerodromes don't. If it's windy (chinook) it's VFR but then we're on 29/26 and that means we'll be holding. If it isn't windy, then it's often IFR, then we're most definitely holding. Strangely, this appears to happen most often Tues-Thurs, our busiest days of the week. Either way, unless it's a calm day with perfect CAVOK weather, there will be delays, and even then there can be just too many planes trying to come in all at once. With AC/Jazz battling WS/WS Encore, they're in a fight for best flight times. Congestion ensues. The STARS, SIDS, airspace have now all been modified, just waiting on the behemoth to open.