The cost to change a flight on Aeromexico depends on your fare type, travel route, and how soon you are making the change before departure. Aeromexico offers multiple fare options such as Basic, Classic, AM Plus, Premier, and Flexible, each with its own change rules and associated costs.

If you booked a Basic fare, flight changes are generally not allowed. These are the most restrictive tickets and are ideal only for travelers with fixed schedules who do not anticipate needing flexibility.

For Classic and AM Plus fares, you can change your flight, but a change fee applies. On domestic routes within Mexico, the fee is typically 700 Mexican pesos (around $40 USD) if changed more than 8 days before departure. If the change is made within 7 days of the flight, the fee increases to around 1,000 Mexican pesos (roughly $60 USD). For international flights, change fees vary by destination. For example, a change fee for flights to the United States may be around $200 USD. In all cases, if the new flight is more expensive than your original booking, you will also need to pay the fare difference.

Passengers traveling with Premier or Flexible fares enjoy the most flexibility. In most cases, there is no fee to change the flight, although fare differences still apply if the new flight costs more. These fare types are best for travelers who need maximum flexibility or are likely to adjust their plans.

Aeromexico also offers same-day flight changes for select routes, subject to availability. These can come with a fee, and requests must usually be made within three hours of the original flight's departure time.

In summary, changing a flight on Aeromexico can cost anywhere from $0 to $200 USD or more, depending on your fare type, destination, and how close you are to departure. Always check the fare rules at the time of booking to know exactly what fees may apply.