Highest-ever offer: Earn 75,000 miles with a Citi / AA Business card

If you are a frequent American Airlines flyer, you have plenty of credit card options to help you earn additional miles and make the most of every American Airlines flight.For a limited time, new Citi® / AAdvantage Business™ World Elite Mastercard® (see rates and fees) cardholders can earn 75,000 bonus miles after spending $5,000 on purchases in the first five months from account opening. This matches the highest offer we've seen on the card.There have also been some recent changes to Citi's American Airlines credit card lineup. The premium Citi® / AAdvantage® Executive World Legend Mastercard® (see rates and fees) recently added a new dining credit. Plus, Citi and American Airlines have also announced upcoming changes to two other cobranded cards.Here's a rundown of the top Citi / AAdvantage credit cards and their current offers. Holding one of these cards could be a straightforward way to score a business-class ticket on American or one of its Oneworld partners.Comparison of the Citi / AAdvantage welcome offersCardWelcome offerOffer value*Annual feeCiti / AAdvantage Executive Earn 80,000 bonus miles after spending $8,000 on purchases within the first three months of account openi...