Thank you. That is an attractive site. Also extremely buggy and inaccurate. My initial searches for F9 routes from TPA lists an incomplete set of nonstop cities, missing several that I know exist. For the remaining cities, the site states "We don't have any scheduled departures between TPA and [CITY] for this date" on dates when there actually is a flight). If you click on the date that says "0 flights" it sends you to Kayak, where it tells, yes, a flight actually does exist.

I'm not sure how the data on this site can be so inaccurate, since it looks like it is using data directly from the airlines.