As of 2026, KLM’s carry-on restrictions depend on your travel class. Economy Class passengers are permitted one piece of hand luggage (max 55 x 35 x 25 cm) and one personal item like a laptop bag or handbag (max 40 x 30 x 15 cm), with a combined weight of 12 kg. Premium Comfort and Business Class travelers enjoy a more generous allowance of two hand luggage items and one personal item, with a total weight limit of 18 kg. These dimensions include any wheels or handles. KLM is relatively strict about these limits, especially on smaller regional flights where overhead space is a premium. If your bag exceeds the size or weight during boarding, it may be checked into the hold for an additional fee. A helpful tip for 2026 is that KLM's "SkyPriority" members often get dedicated bin space, but the physical size requirements remain the same across the board to ensure cabin safety and efficiency.