Originally Posted by
MSPeconomist
Flights through mainland China are often delayed, especially at PEK. The causes can be weather, general ATC overloads, or military closure of large portions of Chinese airspace.
I would take the Taiwan based carrier (China Air) connection through TPE. However, it's in SkyTeam while Air China (the mainland Chinese carrier) is a member of *A. Which FF program the OP would like to credit could be a consideration as these flights should earn a lot of miles for business class.
Yes, Alliance might play a role too.
However, as I stated already, int-int connections in PEK are usually NOT delay-prone, and TPE can be hit hard by typhoons. Someone saying that TPE is less of a risk to fly through int-int in, say, May-October (Typhoon season) than PEK, would get laughed at by myself.