Weight restrictions at no extra charge vary by cabin. Basic Economy, Main Cabin, and Delta Premium Select passengers should follow the standard 50 lb limit per piece. Delta One, First, and Business passengers should follow the 70 lb limit per piece.

For Delta Air Lines in 2026, the maximum weight for a single checked bag is strictly 50 lbs (23 kg) for Main Cabin and Basic Economy passengers. If your bag weighs between 51 and 70 lbs, it is considered "overweight," and you will be charged a fee (typically $100 for domestic flights). For bags weighing 71 to 100 lbs, the fee increases significantly to $200. It is critical to know that Delta does not permit any single bag weighing more than 100 lbs (45 kg) on domestic flights, or more than 70 lbs on certain international routes to Europe and Asia. If you are flying in Delta One, First Class, or Premium Select, or if you hold a high-tier Medallion status, your weight limit is often increased to 70 lbs per bag at no extra charge. Always check your specific itinerary on the Delta app, as some regional "Delta Connection" flights may have even stricter weight or size limitations based on the aircraft's cargo capacity.