Originally Posted by moondog
sha-pek and pvg-pek are totally different animals because the former hosts ~35 flights per day and the latter, ~6. the pvg flights tend to happen (eventually) because most are continuations of flights from syd, lax, sfo, etc. but, sha-pek is much harder to pin down (of those ~35 flights, many never leave the ground) so checking schedules in advance is of little use.
My apologies, I neglected to notice that the OP was referring to Hongqiao and not Pudong. That's good to know regarding SHA's cancellations. Just lucky I flew out of PVG I suppose