No discounts are offered by Aeromexico Airlines after the ticket's expiration date. As per the Aeromexico Airlines Cancellation Policy, the discount solicitation from the airline may have a chance to be handled and approved in 7 to 10 working days. If flights are canceled due to unforeseen circumstances on airlines' end, compensation is provided to the travelers to book the subsequent Aeromexico Airlines trip. Therefore, it won't be difficult for you to cancel your ticket and request a refund from Aeromexico Airlines