<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by dbaker:
UA requires the credit card that purchased the eticket at the time of travel? How bizarre.
How do you purchase tickets for someone else, then? </font>
You either have to go with them to the airport and show the card, or you have to go to a ticket office before the flight and show the card. It's made real clear from them what has to be done, but there are always people who forgot. They only need to see it on the first leg, and they do verify the number, because if you give them the wrong card they say nope and let you try again.
Only for tickets purchased online do you have to do this.