To travel smart with Frontier, follow the Frontier airlines size of personal item policy closely. Each traveler is allowed to bring one free personal item, but it can't be larger than 14 x 18 x 8 inches. The bag's wheels, compartments, and straps are all included in the Frontier Airlines personal item size restriction. Your personal item may be categorized as a carry-on if it is eve... https://airlinesairportterminals.com/blog/frontier-airlines-personal-item-size/