https://us.community.sony.com/s/question/0D5Dp00002ARPWzKAP/8291467-what-is-united-cancellation-policy
Nonrefundable tickets can be changed or cancelled without a fee, but you'll receive a travel credit.Checked luggage and carry-ons: For domestic flights, passengers can bring one personal item, such as a shoulder or laptop bag, onboard, so long as it can be stowed on the floor of the seat in front of them. No full-size carry-on bags are permitted.
