Hi there.
I would not be afraid of flying with Spirit at all,,,have many times to go to Myrtle beach about 8 years ago. However, I don't want to take up two days almost to get to SXM.....did a quick search and nothing looks too appealing yet.
We could fly out of T.O with one stop in ATL and then onto SXM, but with a one week holiday, that would take almost 10 hours. Because of time limits, we are def flying out of T.O direct, non stop, just really having a hard time with when to book. Thanks for your suggestion. If I lived in the states that would def be an option.