Originally Posted by
qmacker
And this is probably a really dumb follow-up. Again, if I book on say Orbitz, how do I choose which frequent flyer program the points go to? I'm also a member of the (albeit useless) Aer Lingus program. I want to be sure i get the MileagePlus credit and not Aer Lingus.
How do airlines stop it going to both?
At booking you will be asked to enter a frequent flier program number. If you wish to credit to UA, enter your Mileage Plus number.
Note that MP credit on EI is limited. Details are here:
http://www.united.com/CMS/en-US/mark...spx?ItemId=438
I might ask why you would consider booking through Orbitz. It is almost always better to book directly with the airline.