Understanding the United Airlines change flight rules can save you time and money when your travel plans shift. United now offers no change fees on most Economy and premium cabin tickets for domestic and international flights, giving you more freedom and flexibility. You can easily change your flight online, through the United app, or by contacting customer service. While Basic Economy tickets are typically non-changeable, exceptions may apply during special travel disruptions or if upgraded. If you need to switch flights on the same day, United also provides same-day change and standby options depending on seat availability and fare type. Fare differences may apply if your new flight costs more. These flexible travel options make it easier to adjust your itinerary without the stress of added fees. Stay informed with the latest United Airlines change flight rules and travel with confidence, knowing you have options when plans change.