Distance from Alcalá de Henares to San Sebastián de los Reyes
How far is it from Alcalá de Henares to San Sebastián de los Reyes? About 15 mi in a straight line and 21 mi by road. Driving time, flight time, midpoint and route details.
Alcalá de Henares and San Sebastián de los Reyes are about 15 mi (24 km) apart in a straight line. By road that works out to roughly 21 mi (34 km), a drive of about 29 min. A nonstop flight covers the great-circle distance in approximately 32 min.
| Straight-line distance | 15 mi / 24 km |
| Road distance (est.) | 21 mi / 34 km |
| Driving time (est.) | 29 min |
| Nonstop flight (est.) | 32 min |
| Driving fuel (est., 1-way) | $3 |
| Typical flight fare | $80–$250 |
| Geographic midpoint | 40.519, -3.494 |
How these estimates work
Straight-line distance uses the haversine formula on each city's coordinates. Road distance applies a circuity factor (~1.2–1.4×) and driving time a blended average speed. Flight time uses typical jet cruise speed plus ~30 minutes for taxi, climb and descent. Treat all figures as planning estimates.
Frequently asked questions
Alcalá de Henares to San Sebastián de los Reyes is about 15 mi (24 km) in a straight line, and roughly 21 mi (34 km) by road.