Flight Luis Munoz Marin International Airport departs from San Juan Luis Munoz Marin International Airport at 21:15 and arrives at Houston George Bush Intercontinental Airport at 01:10.
The flighttime is about 4h 55m. The distance travelled ("as the bird flies"): 3252 Km. So the average speed is roughly 661 Km.
There is an 1 hour time difference between San Juan and Houston