re: Another Spirit / Frontier Thread - Savings Seem Too Good

They do have more direct flights from CUN as well, which is worth the savings to me. You can always upgrade your seat and check bags in advance etc. Your co-passengers will likely be a rougher crowd but may be worth the savings. The big downside of Spirit (assuming you know the extra fees in advance) is if your flight is canceled, you're probably screwed. They don't have the extra planes that other airlines do. If you have the option to book say a SW flight on points and cancel once your Spirit flight is about to take off so you have a good backup plan.