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The itinerary must be operated by United**.
The same-day flight change option will be available within 24 hours before your originally scheduled flight. Requested flight can be in any fare class and be departing within the next 24 hours from when you are making the request. Changes must be made prior to your original scheduled flight.
When the original ticketed fare class is available within 24 hours of departure, the same-day flight change fee will apply.
When the original ticketed fare class is not available within 24 hours of departure, the same-day flight change fee will apply (instead of the change fee stated in the fare rules) plus any additional collections or refund due.
You may standby if seats are not available in the purchased fare class. In these cases, the same-day change fee will apply, but will not be charged unless you are assigned a seat on your alternate flight. Changes in routing are not allowed when standing by. Standby may be requested on the day of departure at the airport kiosk or with a United airport representative. Once you are added to the flight standby list, you can check your real-time standby status at united.com/info.
Upgraded tickets will be automatically added to the upgrade standby list at your applicable upgrade priority. Once you are added to the upgrade standby list, you can check your real-time upgrade status at united.com/info.
Changes are only available for the exact origin and destination airport. Connection points may be changed provided the new routing is permitted by the fare purchased.
Same-day flight changes may be confirmed when checking in online, at any airport kiosk, by calling your local United Airlines reservations office or with a United airport representative.