We flew Spirit once. We had just gotten back from Vegas 5 or so years ago in Sept. and I had another week of vacation that I had to use by mid Oct. so I asked my spouse if another 5 days in Vegas sounded good. Of course the reply was yes. Well, the prices on Southwest out of Columbus on such short notice were so high we couldn't justify paying that much, but I wasn't going to give up that easy, so we booked with Spirit out of Detroit. We drove to Detroit paid I think about $70 to leave the car parked at a lot near the airport, and hopped on our flight to Vegas. The flights were fine because we knew what to expect after reading about Spirit on there website. Back then they weren't charging for checked bags so there were some awful big bags being crammed into the overhead bins. That was a little disappointing because we played by the rules and packed the minimal amount in order to get everything in truly carry-on sized bags, but many other travelers were taking up more than their share of space with suit cases.