Frontier Airlines is known for its no-frills, low-cost business model, and one of the areas where this is most evident is in its strict enforcement of baggage rules at the airport. According to the Frontier Airlines Baggage Policy all passengers are allowed one free personal item that must fit under the seat in front of them. However, any item that exceeds the size limit for a personal item—typically 14" x 18" x 8"—will be classified as a carry-on, which comes with a fee if not prepaid. Frontier staff at the gate often inspect bags for size compliance, and passengers who attempt to bring oversized personal items onboard without paying the carry-on fee are required to pay a higher gate fee,......See More