When traveling with Frontier Airlines, knowing the exact Frontier Airlines Personal Item Size guidelines can prevent unwanted surprises. Frontier allows one personal item free of charge, but it must meet specific dimensions. Typically, the personal item size is 18" x 14" x 8" or smaller. Be mindful of these limits to avoid paying extra for oversized bags. Whether you're packing a purse, small backpack, or laptop bag, ensure it fits comfortably under the seat. By staying within the Frontier Air Personal Item Size restrictions, you'll have a smooth and stress-free travel experience.