Originally Posted by
beijingbound
I guess because it is either so far out (Dec. 14th, 2015) or because of the airline I have booked with (CA)?
Since December is actually very close, it sounds like CA.
Originally Posted by
beijingbound
is this a common practice?
Unfortunately, yes.
Originally Posted by
beijingbound
If it is, why doesn't UA switch me to another flight and update my itinerary rather than just leave me with no flight/itinerary?
It's not that there's no flight, it's that the web site cannot show you the correct information until you call in to have them clear up the record. If it's a major change, United is on the hook to rebook you.
Originally Posted by
beijingbound
Do I need to call UA/MP frequently to demand an updated itinerary to make sure I have a flight on the 14th?
Call whenever you see an issue online.