From spirit.com and Randy the humping reindeer:

NEW ROUTES ARE BLOOMING!

Spirit Airlines to Start New Nonstop Service between Atlanta and Minneapolis-St. Paul, New Orleans in Spring 2016

There's nothing more exciting than new routes. Well, except for maybe the end of winter. Which is perfect because these new routes are launching this Spring. So mark your calendars and get ready for more ways to save with Spirit. Make your trip even better by turning your trip into a vacation with our flight + car or flight + hotel specials!

Minneapolis - Philadelphia (Begins 4/14)
Baltimore- Boston (Begins 4/21)
Baltimore - Detroit (Begins 4/21)
Minneapolis - Boston (Begins 4/28)