Yes, Frontier Airlines recently adjusted its checked bag weight limit, moving from the industry-standard 50 pounds to a stricter 40-pound (18 kg) limit. This change applies to all tickets purchased after early 2024 and remains the standard as of 2026. If your bag weighs between 41 and 50 pounds, you will be charged an "overweight" fee, which typically starts around $50 per bag, per direction. If the bag exceeds 50 pounds, the fee increases significantly, often reaching $100. This move is part of Frontier's "unbundled" pricing strategy, designed to encourage lighter packing and reduce fuel consumption. To avoid these steep penalties, travelers are encouraged to use a luggage scale at home or redistribute heavy items into their "personal item" bag, which does not have a specific weight limit but must fit within the 14"x18"x8" dimensions.