You must be aware of united flight change Policy if you want to change your flight on that airline. The following are some key components of their change flight policy that you should remember:
Customers must pay a lower fee if they modify their reservations the same day as their ticket purchasing, per United Change Flight policy.
Additionally, United Airlines flight change fees might vary from flight to flight depending on a number of factors, including route and destination.
Go to the United Airlines website to make your modifications if they can only be made online.
Furthermore, if you alter your tickets the same day, you might be able to save money by taking an earlier or later flight.
https://airlinespolicy.com/flight-change-policy/united-airlines-change-policy/