If your luggage exceeds the pre-booked weight limit on Ryanair, the consequences are strictly financial and can be quite steep. As of 2026, Ryanair charges an excess baggage fee of approximately £11 to £15 per extra kilogram (or equivalent in local currency). This fee must be paid at the airport ticket desk before you are allowed to board. If your cabin bag is found to be oversized or overweight at the boarding gate, you will be forced to check it into the hold for a "Gate Bag" fee, which often ranges from £45 to £70. Ryanair is notoriously meticulous with their scales and sizers; even being one kilogram over can trigger the fee. To avoid these costs, it is highly recommended to weigh your bags at home and "buy" extra weight allowance online at least two hours before your flight, which is significantly cheaper than paying at the airport. Additionally, remember that no single bag can ever weigh more than 32kg due to health and safety regulations for baggage handlers; if your bag exceeds this absolute limit, the airline will refuse to carry it regardless of the fee you are willing to pay.