In 2023, American Airlines held the title of the largest airline fleet in the world, operating over 900 mainline aircraft. This massive fleet is a result of decades of growth and its significant merger with US Airways, allowing the carrier to dominate domestic U.S. travel and maintain a massive international presence. When including its regional partners under the American Eagle brand, the total number of aircraft associated with the airline exceeded 1,400. American's fleet is characterized by a mix of Boeing and Airbus narrow-body planes for domestic routes, such as the Boeing 737 and Airbus A321, along with Boeing 777 and 787 Dreamliners for its long-haul operations. Its closest rivals in terms of fleet size are United Airlines and Delta Air Lines, both of which also manage nearly 900 mainline aircraft. This scale allows American Airlines to operate thousands of daily flights from its primary hubs in Dallas/Fort Worth, Charlotte, and Miami. Despite the financial pressures of the industry, American continued to take delivery of new, more fuel-efficient aircraft throughout 2023 to modernize its operations and maintain its competitive edge as the world's largest carrier by sheer volume of planes.