18 hours and 14 minutes
By car that trip requires about 19.5 hours of driving time.
The shortest driving time is 18 hours and 21 minutes.
Google Maps estimates the driving time as 28 hours.
Google Maps estimates the drivng time as 20 hours and 22 minutes.
The driving distance between Chicago, IL and San Antonio, TX is approximately 1240 miles. The driving time would be approximately 20 hours 15 minutes if you were to travel non-stop in good driving conditions. (The driving time does not take into consideration conditions which may extend trip time such as weather, road work, border crossings and rush hour traffic in urban areas.)
MapQuest estimates the driving time as 13.75 hours.
Driving directions to San Antonio, TX274 mi - about 4 hours 18 mins
About three hours.
Google Maps estimates the driving time as 20 hours and 9 minutes.
MapQuest estimates the driving time as 4.25 hours.
About 11.5 hours of driving time.
about 22 hours