Changing a flight on Aeromexico can cost different amounts depending on your ticket type, destination, and when you make the change. If you purchased a Basic Fare, changes are usually not allowed. With Classic and AM Plus fares, you can make changes by paying a fee and any difference in fare. Premier and Flexible fares allow more flexibility, with little or no fee depending on the conditions.

For domestic flights within Mexico, changing a flight more than 8 days before departure might cost around 700 MXN, and if the change is made 7 days or less before departure, the fee might be 1,000 MXN. For international flights, the change fee is usually higher. Flights to and from the United States or Canada might have a change fee of around 4,020 MXN. Flights to Europe or Asia may have a fee of about 6,030 MXN. Routes to South America, Central America, or the Caribbean often have fees around 4,020 MXN.

These fees are only part of the cost. You also have to pay any fare difference if the new flight is more expensive than the original. If your new flight is cheaper, Aeromexico does not usually refund the difference.

If you miss your flight without changing it in advance, it may be considered a no-show, and you could lose the value of your ticket. It's best to make changes as early as possible. You can make changes through Aeromexico’s website, mobile app, or by calling customer service. If you booked through a travel agency, you may need to contact them directly.

In general, buying a Flexible Fare is the best option if you think you might need to change your flight. These fares allow you to make changes without paying extra fees, though you may still need to pay the fare difference if the new flight costs more.

So, the cost to change a flight on Aeromexico can range from 700 MXN to over 6,000 MXN, depending on the destination and timing, plus any difference in ticket price.