If a flight is cancelled, the airline will make every effort to rebook it for your destination. If that is not possible, the airline will provide you a complete refund in the form of the original payment. If you used a debit card or credit card to make the purchase, the refund will be credited to your bank account within 7 to 10 business days. You can reach our Azores Sata Airlines date change team by calling +1 (786) 292-5053. https://blog.aircomodo.com/azores-sata-airlines-date-change/