When comparing American Airlines and United Airlines, both are considered exceptionally safe and rank among the top 25 safest airlines globally as of 2026. Because they are major U.S. "legacy" carriers, they are subject to the world's most stringent safety regulations and oversight by the Federal Aviation Administration (FAA). In terms of recent safety rankings and operational data, United Airlines often edges out American slightly in metrics related to operational reliability and safety innovation. United has invested heavily in modernizing its fleet and has a slightly better recent record regarding "serious incidents" relative to the sheer volume of flights it operates. American Airlines, while also maintaining a stellar safety record, has faced more criticism in recent years regarding operational hurdles, such as having a higher cancellation rate and a lower on-time performance percentage compared to its peers. However, it is important to understand that in the world of commercial aviation, "safety" is a baseline requirement, and the statistical difference between these two giants is negligible for the average passenger. Both airlines use advanced pilot training programs and rigorous maintenance schedules. If you are choosing between the two, your decision should likely be based on route availability, price, or loyalty perks rather than safety concerns, as both maintain a gold standard for passenger security and aircraft integrity.