Best-ever Citi / AA Executive offer: Earn 125,000 miles for a limited time

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, the Citi® / AAdvantage® Executive World Legend Mastercard® (see rates and fees) is offering its highest-ever welcome offer, along with new card benefits and perks as part of the card's refresh in August.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 World Legend MastercardFor a limited time, earn 125,000 bonus miles after spending $15,000 on purchases in the first five months from account opening.$1,813$695Citi® / AAdvantage Business™ World Elite Mastercard® (see rates and fees)Earn 65,000 bonus miles after spending $4,000 on purchases in the first four months from account opening.$943$0 introductory annual fee for the first 12 months, then $99 thereafterCiti® / AAdvantage® Globe™ Mastercard® (see rates and f...