Discover United Airlines Baggage Policy accommodates a wide spectrum of passengers with its user-friendly. Basic Economy allows only for a personal item on the majority of flights excepting international ones. Most tickets also permit both a personal item and a carry-on bag. Checked bag fees differ by route and cabin and are subject to some excellent discounts for MileagePlus members and those in cabins of premium class. The policy also considers special products such as musical instruments and sporting gear. While very effective, rates for oversize or overweight baggage can add up quickly, so careful planning is essential to avoid additional charges.