Originally Posted by
mds875
Why does one code not equate to the other?
Because the airlines use different systems.
Originally Posted by
mds875
Does anyone have any predictions on what rate I will accumulate miles for upcoming AC flight?
On UA metal 100%. On AC metal if also AC code then whatever the charts say.
Originally Posted by
mds875
Also, I would have thought with UA ticketed flight always 100% miles.
UA-operated is always 100%. In *A it is operating carrier which matters, not ticketing carrier or code.