Changing a flight with Aeromexico depends on the type of ticket you purchased. If you bought a Basic Fare, you cannot make any changes at all—this fare is non-changeable and non-refundable. For Classic and AM Plus fares, you are allowed to change your flight, but there is a fee. On domestic flights within Mexico, the change fee is usually around 700 pesos if the change is made more than eight days before the flight, or about 1,000 pesos if it’s made within seven days. For international flights, the change fee can range between $200 and $320 USD, depending on the route and how close to the departure date the change is made. If you purchased a Premier fare, you can change your flight without paying a change fee, although you still have to pay any difference in fare between the original and the new flight. The Flexible Fare offers the most flexibility, allowing unlimited changes without any fees, but again, fare differences must still be paid. It’s important to note that if you don’t show up for your flight and haven’t made any prior changes, your entire ticket may be canceled and you could lose its value. Additionally, if you booked your ticket at least seven days before departure and want to change it within 24 hours of booking, you may be able to do so without paying a fee. This applies mainly to flights departing from or arriving in the United States or Canada. Regardless of your fare type, if the new flight you choose is more expensive than your original one, you will be required to pay the fare difference. However, if the new flight is cheaper, Aeromexico typically does not refund the difference. To avoid unexpected costs, it’s best to review the conditions of your fare at the time of booking and consider more flexible options if your travel plans are uncertain.