No, American Express (Amex) and American Airlines (AA) are two completely separate and independent companies. American Express is a global financial services corporation primarily known for its credit cards, charge cards, and traveler's checks. American Airlines is one of the world's largest commercial airlines, headquartered in Fort Worth, Texas. The confusion often stems from their similar names and the fact that they have a long-standing business partnership. For many years, American Express has been a primary partner for American Airlines' "Global Business Travel" services, and you can often find Amex travel deals that include AA flights. However, American Airlines' primary "co-branded" credit card partner is actually Citibank and Barclays, not American Express. While both are "American" icons, they operate in entirely different industries—one manages your money and the other manages your flights. You cannot pay your American Express bill at an American Airlines ticket counter, and having an American Airlines ticket doesn't grant you access to American Express Centurion Lounges.