British Airways and American Airlines are both part of the Oneworld alliance and I have frequent flier numbers for both of them - for American AAdvantage and British Airways Executive Club. And they're both in Expedia.

So let's say I buy a plane ticket from the United States to Europe. I assume only one frequent flier number gets the miles. But which one?

  • I haven’t used Expedia in a couple of decades, but I suppose that when you book, it preselects a FF account, but lets you change it, doesn’t it?
    – jcaron
    Oct 2, 2023 at 7:00
  • 4
    Aside from @jcaron's comment, you can always change the frequent flyer number when you check in for the flight. It's ultimately between you and the airlines; the travel agent only plays a secondary role.
    – phoog
    Oct 2, 2023 at 7:11

1 Answer 1


When you are entering passenger information during the purchase process, there is a drop-down to select the frequent-flier account for each passenger. It is filled with some default value but you can change it to one of your choosing independently for each passenger. The options are not filtered by alliance, so make sure you select one that matches the ticket being purchased.

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