<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by j379pa:
I believe that they must be different kinds of cards for this to work, i.e. American Airlines on VISA, United on Discover.
This is how I do mine (3 different airlines), and it works well. I just have to keep track of which I use where.
JP</font>
They can all be of the same type, I have mastercard's on different programs with no problems.