Originally Posted by
YYC009
AC881/18DECCDGYYZ was likely delayed as AC880/17DECYYZCDG was late into CDG as it left YYZ late, likely due to YYZ weather event 17DEC. If it is weather, no compensation offered for the delay. Baggage is a different story, but aren't you now home? So if they deliver your bag the next day, what loss did you actually incur? Inconvenience, yes, but nothing monetary, right? I would suspect that AC will offer you a goodwill gesture like a promo code.
A couple of things I've read online, including
this, suggest that weather on a late inbound isn't a valid excuse, under EU261, for a late arrival of the next flight, which would mean the fact that 880 was delayed due to weather shouldn't impact OP's claim.