Cancellation happens due to our sudden change in the plans. Things become worse if we are not aware of the Aeromexico change flight fee (http://change flight fee or penalties. Fees depends on diffrent fares likes for flexible fare -no fee, for comfort fare -cost upto 300USD etc. https://airlinespolicy.com/flight-change-policy/aeromexico-flight-change-policy/). If passengers want to make changes in their reservation with Aeromexico airlines so they have to keep in mind the change flight fee or penalties. Fees depend on different fares likes for the flexible fare -no fee, for comfort fare -cost up to 300USD, etc.