Spirit Change Flight Policy allows passengers to modify their reservations, though fees may apply based on timing and fare type. Changes made more than 60 days before departure are free, while modifications within 7-59 days incur a fee. Closer to departure, the fees increase. Passengers can change flights through the Spirit Airlines website, mobile app, or by contacting customer service. If the new fare is higher, the difference must be paid. However, no refunds are given if the new fare is lower. Spirit Airlines' policy aims to provide flexibility while maintaining budget-friendly options for travelers.