Spirit Airlines offers excellent offline and online services. With Spirit Airlines, you have the provision of online check-in. If you do not have the time to go to the airport hours before departure, you can opt for the web check-in option. The Spirit Airlines website allows you to check in as early as 24 hours before departure time. The boarding pass gets sent to you through your mail. You can just print it and show it at the airport to board your flight. For more information, contact Spirit Airlines customer service.