Flights are available on Monday through Thursdays starting on September 5 through November 7, 2018, with blackout dates on September 10-12, 19 and October 8th. Tickets must be booked by midnight tomorrow August 8, 2018.
Searching on JetBlue, I found seats departing SLC on Thursday, October 18 and returning from FLL on Wednesday, October 24, 2018.
Need a place to stay while in Ft. Lauderdale? Here's a list of available accommodations for the mentioned dates on Hotelwatchdog.