If you want to check in more than 23kg, you can purchase additional baggage allowance, however, the rules and fees are determined by the fare type you purchased, and may vary depending on the route and region you are traveling to.

If your bag is 23.5 kg and the limit is 23 kg, the outcome depends entirely on the airline's "grace" policy and the individual gate agent. Many full-service carriers (like Delta or Lufthansa) allow a 0.5 kg to 1 kg "buffer" to account for scale variations, but this is a courtesy, not a right. Low-cost carriers are notorious for strict enforcement; if you are 0.5 kg over, they may charge you an excess baggage fee that can range from $25 to $100. In 2026, many airports have "Self-Service Bag Drop" machines that are programmed with zero tolerance; if the machine reads 23.1 kg, it may simply refuse to print the tag until the weight is corrected. To avoid this, always keep a few heavy items (like a jacket or a pair of shoes) easily accessible so you can quickly move them to your carry-on or wear them if challenged. A high-value "pro-tip" is to never "guess" your weight; a $10 digital luggage scale is an essential tool that can save you a $75 fee at the counter.