The journey from San Antonio to Washington, D.C. is a long-distance trip across the country. Flying from San Antonio International Airport to one of the major D.C. airports (DCA, IAD, or BWI) is the only practical method. Driving is possible but takes over 24 hours of pure road time, making it less ideal for most travelers.
Total Distance: Driving distance 2,400 km; straight-line air distance 2,100 km.
Most flights require a connection in a hub city like Houston or Dallas.
April to June or September to October for pleasant weather.