Spirit Airlines' customer support is open 24 hours a day, 7 days a week, so customers can call them at any time if they wish to take chances with their flight, such as changing the time or destination. Our customer care will cancel your flight immediately, and the cash will be refunded as soon as possible, which could take up to 3-4 business days. Flight cancellation notices from Spirit Airlines will be delivered to the e-mail address supplied at the time of booking. Customers can change their flight up to one hour before the scheduled departure.
https://wondercustomer.com/spirit-airlines-flight-cancellation/