sigma1104 is correct that the schedule page is the best info source for future flights. To expound a bit for those less experienced with the SW web site, however, note that you want to use the lower half of that page under the heading "Download Schedule" rather than the "View Schedule Online" section in the upper half. Viewing online doesn't tell you where a direct flight stops. With the full timetable (pdf format) you can use the Acrobat Reader search function for the flight number. Your "not non-stop" direct flight number will appear in several places (often including some that are inbound rather than outbound), so you usually have to use Reader's "find again" function one or more times until you locate your flight's non-stop destination.