That means that if your checked bag weighs more than 50 pounds, your airline will charge you a set fee on top of their standard baggage rate. Most airlines also have a weight limit, usually 70-80 pounds, after which they don't accept bags, even for an extra fee.

If your suitcase exceeds the airline's weight limit (typically 50 lbs or 23 kg for economy), the most immediate consequence is an overweight baggage fee, which can range from $30 to $200+ per bag depending on the airline and how much it is over. If the bag is significantly heavy—usually over 70 lbs (32 kg)—many airlines will refuse to take it at all due to health and safety regulations for the baggage handlers. When you are at the check-in counter and a bag is flagged, the agent will usually give you the opportunity to "repack" on the spot. This often involves moving heavier items into your carry-on or into a companion's lighter suitcase to balance the load. To avoid these "airport floor scrambles," it is highly recommended to use a handheld luggage scale at home. Some travelers also choose to wear their heaviest items, like boots or jackets, through security to shed weight. If you know you will be over, pre-paying for an extra bag online is almost always cheaper than paying the "overweight" penalty at the counter on the day of travel.