We used the self-service kiosks for Spirit at the FLL airport on 9/30 and they didn't charge us anything. I believe if you go to the counter and have a customer service agent print it out for you, it's $10.
How can I check in and get my boarding pass?
Checking in online at
Spirit.com is free, and it's the quickest way to check in for your flight and print your boarding pass. Check-in begins 24 hours before departure and ends an hour prior to departure. This is also a good time to buy a seat assignment or last minute bags – it will be less expensive online than at the airport. Bags purchased within 24 hours prior to departure will be charged at the
online check-in rate, so buy bags early and save major moola.
If you don’t
check in online,
our kiosks at the airport are self-serve and easy to use.
Customer Service Agents are available at the airport; however, you may wait longer at our check-in counters and there is a charge of $10 to print each boarding pass.