SFO and HOU are approximately 1,646 miles apart by great-circle distance.
No. Roame's current schedule feed lists service with stops from SFO to HOU, but no nonstop service.
Airlines represented in the current schedule are Southwest Airlines (WN).
Aircraft listed in the current schedule include Boeing 737-800 Winglets (73H), Boeing 737 MAX 8 (7M8), 7S7 and JET.