by showing the bag fees it pretty much states you can have more than 1 bag, as long as you dont mind paying extra
just found this though
We allow one personal item free of charge; and for a fee we allow one carry-on bag, and at least one checked bag per customer.
While we guarantee all customers the ability to purchase one checked bag, any additional checked bags are based on availability.
For customers traveling to and from Lima, Peru, we only allow one checked bag per customer, and all items must meet weight and size restrictions.
http://customersupport.spirit.com/en...gs-i-can-bring