I have to buy airfare for my boss on United. I will have to use her credit card but I was hoping to find a portal that would allow me to earn extra points or $$ by going through it first. The price is the same through United or any of the aggregators. Is there anything better than say the $2 they offer on Orbitz??

This one is small but I will be purchasing business class airfare to Paris for her in the next few months which will be a biggie.

ETA - I realized I never finished filling in my title, sorry about that!!!