Yes, Volaris has a comprehensive cancellation policy. FIf you purchase a refundable ticket, you can cancel your flight anytime before departure without any fees, and you\’ll receive a full refund to your original payment method. For non-refundable tickets, cancellations can still be made, but you\’ll receive an eCredit for future travel, and a cancellation fee may apply, depending on the ticket type
Source: https://portal.mtaq.com.au/forums/general-discussion/c0a9be58-f184-ef11-9443-000d3acaa853