The United Airlines Baggage Policy has a straightforward and effective policy to make your flying experience easier. The majority of travelers are permitted one free carry-on luggage together with a personal item, like a purse or backpack. The cost of checked luggage varies based on your MileagePlus level, price class, and flight route. The first checked bag is often fee-based for Economy travelers and additional charges apply for subsequent bags or luggage that weighs more than the airline allows. Free checked bags are a common benefit for passengers in premium cabins or elite MileagePlus members which makes travel even more convenient. Active military personnel are also eligible for special baggage allowances from United Airlines which let them check extra bags for free.