Getting a travel rewards card is a great idea. These cards both come with high rewards on travel spendings. For example, you will earn 2x AAdvantage miles on American Airlines purchases with both cards, but the American Airlines AAdvantage MileUp℠ Card will also give you 2x miles at grocery stores, including grocery delivery services. What is more, the American Airlines AAdvantage MileUp℠ Card credit card offers 10,000 bonus miles after making $500 in purchases within the first 3 months of account opening. Another difference is in rate and fees of these credit cards. The American Airlines AAdvantage MileUp℠ Card comes with no annual fee.
If you need a card with TSA PreCheck feature - pay your attention to Citi® / AAdvantage® Executive World Elite™ Mastercard® credit card. Here you can earn 2 AAdvantage® miles for every $1 spent on eligible American Airlines purchases and 1 AAdvantage® mile for every $1 spent on other purchases.
Aviator credit card has higher rates and fees. This card comes with 18.24%, 22.24% or 27.24% (Variable)93 interest rate and $9993 annual fee. You can't choose which one you apply for. We also recommend you consider other credit cards for travel. Some of them comes with no annual fee and interest free period.