Lost on the internet....

Dumb move of the month - a couple of weeks ago my friend and I ordered some plane tickets on line for our trip to New Mexico in October.  We searched out the information on my computer but paid for the tickets with her credit card so she could get the points.  I carefully wrote down how much I owed her and have since written a check to her.  What I neglected to do was print our the flight information. I know where we're flying from and the dates of the flights but don't know how to retrieve the actual information, like, for instance, the airline we are flying on.  I'm hoping my friend can track it back through her credit card charges.  Any other suggestions?