From airlineroute.net, Jetblue is upping their daily flight to 2x daily on the same day, leaving at the same time and using the same equipment.

San Francisco – Ft. Lauderdale

B6578 SFO1425 – 2256FLL 320 D
B6278 SFO2325 – 0744+1FLL 320 D


B6577 FLL1040 – 1334SFO 320 D
B6277 FLL1915 – 2232SFO 320 D