Frontier Airlines is a budget airline that charges for most services, including checked baggage. The luggage allowance varies depending on the type of fare purchased by the passenger. Passengers who pick Basic Economy fare on Frontier flights from Denver to Chicago Midway Airport are only entitled to one small personal item. Passengers who pick Standard Economy fare can bring one personal item and one carry-on bag. The carry-on bag's maximum dimensions must be 24 × 16 × 10 inches, and it should fit in the overhead bin.