Originally Posted by
YVR_Mark
Has AC decided to fly slower in order to conserve fuel, and simply hopes that no one will notice? A half-hour extra flight time is definitely noticeable, and is unacceptable.
No, definitely not.
Originally Posted by
YYC009
Winter schedule takes effect Sunday, October 28, 2018, so as others suspected, scheduled block times in the winter are longer due to longer taxi times to account for deicing.
Right. But also westerly winds at flight levels tend to be (on average) more intense during winter. Look at the flight times for opposite direction flights (YVR-YUL). The schedule shows a
reduction in flight time effective October 28.