United Airlines no longer charges change fees for most standard Economy  1-833-281-3071 and higher-class tickets on domestic flights and international flights between the U.S., Mexico, and the Caribbean. If you change your flight, you only pay the fare difference, if applicable 1-833-281-3071 . However, Basic Economy tickets are non-changeable—no modifications or cancellations are allowed unless a flexible travel waiver applies. For international flights outside the mentioned regions 1-833-281-3071 , change fees may still apply depending on the fare rules.

Award tickets booked through United MileagePlus also have no change fees if changes are made  1-833-281-3071 more than 30 days before departure. Within 30 days, some mileage changes may incur a fee. United may also offer travel waivers during major disruptions like weather or operational issues, allowing free changes for affected flights.

To confirm your eligibility or make a change, call 1-833-281-3071. When prompted, say "representative" or press “0” to speak directly with a live agent. Have your booking reference, flight details, and personal information ready. The agent can tell you if your ticket qualifies for no-fee changes or if a fare difference applies 1-833-281-3071 . If calling about a disrupted flight, ask about active travel waivers.

In summary, use 1-833-281-3071 for flight changes. No change fees apply to most tickets, except for Basic Economy. Fare differences may apply. Always confirm with a representative.