How long is flight time between Houston and Madrid Spain?

A random search for flights from Houston Intercont (IAH) to Madrid Barajas (MAD) shows:

OPTION 1: 12hr 55min via London Heathrow (LHR)

IAH - LHR British Airways Flt 196 Dep 08:35pm 12Feb,Fri

LHR - MAD British Airways Flt 464 Dep 01:10pm 13Feb,Sat

Flight Duration: 11hr 10min; Layover Time: 1hr 45min; Total Trip Time: 12hr 55min