Sunworld was around in the 1980's flying DC9's mostly to/from Las Vegas, with some other point to point service to Reno and between a couple of other markets. Sunworld was based in Las Vegas.
This timetable was a tri-fold two sided cardstock type schedule and did not include a route map.
Service was to:
Non Reno/Las Vegas service was between San Jose and Ontario, San Diego and Tucson, Portland and Seattle.
As the cover mentioned, they offered free Las Vegas stop overs when flying through to other Sunworld destinations.
They also had a frequent flyer program called 'Fun One', but you had to call or ask in person about it.