If you're not logged in to your AAdvantage account, you'll need to enter your PreCheck number manually in the Known Traveler Number field. Otherwise American Airlines AAdvantage can enter their KTN once and opt for American Airlines to 'remember' it, thus automatically adding it to future ...
Before you can start earning points with Hilton, you’ll need to sign up for a Hilton Honors account. It’s free to join, and you can registerhere. To log in to your Hilton account, visit Hilton.com and select “sign in” from the menu at the top. » Learn more:How to become ...