Yes, most co-branded American Airlines AAdvantage credit cards (such as the Citi / AAdvantage Platinum Select or the Barclays AAdvantage Aviator Red) offer a "first checked bag free" benefit as of 2026. This perk typically applies to the primary cardmember and up to four companions traveling on the same domestic American Airlines-operated reservation. To trigger the benefit, your AAdvantage number must be linked to your reservation at the time of booking; you do not necessarily have to use the card to pay for the flight itself, though it is often recommended for earning miles. It is important to note that this benefit is usually restricted to domestic itineraries; it does not typically apply to international flights where a baggage allowance might already be included or where different regional rules apply. The savings can be substantial—up to $400 per round trip for a group of five—making the card's annual fee worthwhile for frequent domestic flyers.