I think the Netflix schedule depends on the show. According to this article
will air on The CW on Oct. 10 and streams on Netflix Canada on Oct. 11.
If my prediction about The Flash
is correct, the Dec. crossover will be The Flash
(Space) and Supergirl
For those that follow a lot of CW shows, it's probably easier to subscribe to one of the The CW stations as pick and pay, unless they already subscribe to all the Canadian services.