Want to avoid unnecessary baggage fees on Frontier Airlines? The airline allows one free personal item, but it must fit under the seat. Checking the Frontier Airlines personal item size ahead of time helps you travel hassle-free. The personal bag size Frontier permits includes backpacks, small totes, and laptop bags. Exceeding the dimensions for personal item Frontier could lead to extra charges at the gate. Before packing, ensure your Frontier personal bag size meets the airline’s rules. A little preparation can save you money and stress! #FlySmart