Originally Posted by
3Cforme
Certainly not specific to Delta, nor SkyMiles accrual or redemption.
Unless you are a DL using YYZ as a way to save money to Asia or Europe by originating in YYZ. I’ve done a few trips flying to YYZ on a cheap miles ticket and then booking from YYZ. These kinds of delays make that approach tricky.
But for most, not DL related.