According to the Frontier Airlines Baggage Policy, Frontier Airlines charges fees for all checked bags, including the first checked bag. The fees vary depending on the route and the time of purchase. Frontier Airlines also charges fees for overweight and oversized bags. Bags weighing between 41 and 50 pounds will incur a fee of $50 per bag, per direction. Bags weighing 51 to 100 pounds will incur a fee of $100 per bag, per direction. Bags over 100 pounds are not accepted.
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