The cost to change flights varies depending on the airline, the type of ticket, the route, and the time of the change request.

Many airlines offer different types of United Airlines Change Flight  +1-860-498-9674 and fees. For example, a basic economy fare might have strict change fees and restrictions, while a more expensive flexible fare might allow changes without fees.

In general, most airlines charge a change fee that can range from $0 to several hundred dollars per ticket. Additionally, if the new flight is more expensive than the original one, you may have to pay the fare difference.

It's best to check with your airline directly to understand their specific change policies and fees. You can typically find this information on their website or by calling their customer service line.

To change a United Airlines flight, you can follow these steps:

1. Visit the United Airlines website and log in to your account.
2. Go to the "My Trips" section and find the reservation you want to change.
3. Click on "Change flight" and select the new flight you want to book.
4. Review the new itinerary and make any necessary changes to the passenger details or contact information.
5. If there is a difference in fare between the original flight and the new flight, you will be prompted to pay the difference.
6. Review and confirm the changes.