Originally Posted by
PUCCI GALORE
... there was work going on at YYZ and ATC had ordered airlines to cancel flights.
What kind of work in YYZ?
Runway construction?
Was there one less runway than usual?
ATC in Canada can't order airlines to cancel flights.
It can issue delays so that cancelling may have been the most viable solution.
AC chose to cancel YQB-YYZ over a different flight or accepting a lengthy delay.