If you find that your seat belt is too short, the standard procedure in 2026 is to quietly ask a flight attendant for a seat belt extender. These are specialized lengths of belt that click into the existing buckles to provide extra room. It is best to request one as you board the aircraft or once you reach your seat before the safety demonstration begins. Flight attendants handle these requests with complete discretion, as it is a routine part of their safety duties. You must use the airline-provided extender, as personal ones purchased online are strictly prohibited by FAA and international regulations due to lack of certified testing with the specific seat model. If you cannot fit between the armrests even with an extender, most airlines may require you to purchase an additional seat for safety and comfort.