Understanding the Spirit Airlines check in process can help you save time and avoid unnecessary fees. Passengers are encouraged to check in online through the website or mobile app starting 24 hours before departure and up to one hour before the flight. Completing the Spirit Airlines check in online also allows travelers to purchase bags, select seats, and access their mobile boarding pass. Airport kiosk or counter check-in is available but may come with additional costs, especially for printing boarding passes. To make the Spirit Airlines check in smoother, travelers should have their confirmation code and travel documents ready. Arriving early is important if you need to drop off checked bags. https://airline-updates.com/blog/spirit-airlines-check-in/