Spirit Airlines has a policy regarding flight changes and cancellations. Fees and refund eligibility vary depending on the type of ticket purchased and the time of cancellation or change. Generally, non-refundable fares do not qualify for refunds, but some changes may be allowed for a fee. Refunds or credits may be issued in certain circumstances, such as flight cancellations by the airline.
https://www.flightaura.com/flight-change-policy/spirit-flight-change-policy/