Southwest Airlines allows each passenger to bring:

• One carry-on bag that fits in the overhead bin, with maximum dimensions of 24 x 16 x 10 inches (61 x 40 x 25 cm), including wheels and handles. There is no weight limit, but you must be able to lift it into the overhead bin yourself

• One personal item that fits under the seat in front of you, such as a purse, briefcase, laptop bag, or small backpack. The typical maximum size for personal items is about 16.25 x 13.5 x 8 inches (41 x 34 x 20 cm), with no weight restriction

Passengers cannot bring two full-sized carry-on bags; if you attempt to bring two carry-ons plus a personal item, one carry-on will need to be checked at the gate

. In summary, Southwest's carry-on policy permits one carry-on bag plus one personal item per passenger, both free of charge. Additional or oversized carry-ons must be checked and may incur fees