[United Airlines→Date+Shift] How much is it to change a flight to a different date to get Quickly 20K26 ?

[United Airlines→Date+Shift] How much is it to change a flight to a different date to get Quickly 20K26 ?

[United Airlines→Date+Shift] How much is it to change a flight to a different date to get Quickly 20K26 ?
Changing a flight +1-855-(654)-7026 (US)