For aircraft safety and weight/balance calculations, airlines and regulatory bodies like the FAA and EASA use standardized average weights rather than weighing every individual. As of 2026, the FAA "Standard Average" for an adult passenger (including their summer clothing and a personal item) is approximately 190 to 195 pounds (86 to 88 kg). In the winter, this estimate increases by about 5 pounds to account for heavier coats and boots. The European Union Aviation Safety Agency (EASA) conducted a comprehensive study recently that placed the average adult weight (including carry-on luggage) at roughly 185 pounds (84 kg). These figures are periodically updated through random surveys to reflect the changing demographics of the traveling public. For smaller commuter aircraft, weight and balance are so critical that pilots may ask for actual weights or use more conservative estimates. These averages are vital for calculating how much fuel is needed and ensuring the plane remains within its structural limits for takeoff and landing.