Spirit Airlines flight change policy their flight reservations for a fee, which varies depending on factors like the fare type and how far in advance the change is made. Typically, changes made online or through the Spirit Airlines reservation center incur a fee, while changes made at the airport may have additional charges. Additionally, any fare difference between the original and new flights may apply. It's advisable for passengers to review Spirit Airlines' specific policies regarding flight changes, as they can vary based on the circumstances and fare rules associated with their ticket.