Flight General Edward Lawrence Logan International Airport departs from Boston General Edward Lawrence Logan International Airport at 16:30 and arrives at Madrid Adolfo Suárez Madrid–Barajas Airport at 05:40.
The flighttime is about 7h 10m. The distance travelled ("as the bird flies"): 7500 Km. So the average speed is roughly 1047 Km.
There is an 6 hour time difference between Boston and Madrid