Visit the Aeromexico website and navigate to the "Manage Your Trip" section [𝟭-𝟴𝟱𝟱-𝟱𝟲𝟬-𝟬𝟬𝟳𝟬]. Enter your booking reference number or e-ticket number and the last name of the primary passenger  [𝟭-𝟴𝟱𝟱-𝟱𝟲𝟬-𝟬𝟬𝟳𝟬]. Select the flight you wish to change and click on the "Change Flight" option.