After the ticket's expiration date, Aeromexico Airlines doesn't offer a discount. The Aeromexico Airlines discount request may have a chance to be evaluated and approved in 7 to 10 working days. Aeromexico Airlines Cancellation Policy, permits to cancel the flights on the web or over a phone call as well as at the airport counter. Therefore, it won't take much for you to cancel your flight and get your money back on Aeromexico Airlines.