Most people in the Midwest have had a pretty rough time with airfares, especially since Irma. Since you have a while to go, about the only thing you can do is to set up a fare alert and if you get something that you can live with, jump on it. Although Southwest is apparently denying it, there are persistent rumors that they will announce they are entering the SXM market this fall. If so, that should drive some prices down. Best wishes.