The United Airlines Baggage Policy generally allows passengers to bring one complimentary carry-on bag and one personal item. The fees for checked baggage are influenced by factors such as your MileagePlus membership level, the fare class purchased and the travel destination. Standard checked baggage must not exceed a total weight of 50 pounds and a maximum dimension of 62 inches. Additional fees apply for oversized or overweight luggage. There are particular allowances for items such as international travel bags or sports equipment. To avoid incurring extra charges, it is advisable to familiarize yourself with United’s policies before your trip.