Ask holiday travelers and frequent flyers what their favorite rewards card is, and they’ll probably tell you it’s the Citi Gold/AAdvantage World MasterCard. This credit card has become the standard among air mileage redemption programs, with a low annual fee, low points-for-tickets exchange rate and lots of chances to rack up AAdvantage miles. To get you started, Citi will waive the enrollment fee and give you one year of free AAdvantage service! » Read more: Citi Rewards Cards