When you first look at the cost of Spirit Airlines flights, you immediately think - WOW what a GREAT price!!! What you DON'T realize, which is NOT readily available information is that they charge you for EVERYTHING extra. If you consider "extra" as 1) baggage (most airline charge for this now, yes...but not the price that Spirit charges...so factor in at least $30 per bag, per flight), 2) carry-ons are NOT free. You are allowed a personal item...but not a carry on bag... so if you have one, again factor it in the same as baggage, 3) SEATS - if you are traveling with your family and you want to sit together - IT WILL COST YOU. RIDICULOUS. Oh, and not to mention...if you make a change to your flight - there is a HUGE change fee that isn't disclosed until after you make the change and they charge your credit card.
I am completely disgusted with Spirit. I will NEVER, EVER book with them again. Go with a bigger carrier - Delta, AA, United, etc... and you will get better service, and your flight with end up costing LESSSSS even though it "appears" more expensive than Spirit.