How long is the drive to San Antonio?

It is about 24 hours of driving time.

Are there direct flights to San Antonio?

No, you will need a connection from Rapid City.

What is the best time to visit San Antonio?

Spring and fall are the most pleasant.

Is San Antonio expensive?

It can be, depending on your choices.

Do I need a car in San Antonio?

A car is helpful for exploring.

Keystone

San Antonio

Flight Driving

Keystone to San Antonio

Updated: 28 May 2026

The journey from Keystone to San Antonio covers roughly 2,200 kilometers. Flying from Rapid City Regional Airport (RAP) to San Antonio International Airport (SAT) is the most efficient way, usually requiring a connection. Driving involves a long journey via I-29 and I-35. This trip takes you from the Black Hills to the historic city of San Antonio. Expect a travel time of 8 to 10 hours by air or 24 hours by car.

Total Distance: 2,250 km driving distance; 1,900 km straight-line air distance.

Fastest Way

Flight from RAP to SAT is the fastest, taking about 9 hours.

Cheapest Way

Driving is generally cheaper for groups.

Compare Keystone to San Antonio Routes

	Flight Connecting	Driving Direct
Duration	9 hours	24 hours
Avg Price	$400 - $800	$400 - $700 in fuel
Operator	American Airlines	Personal Vehicle
Route	RAP to SAT via DFW.	I-29 S to I-35 S.
Tip	Book early to get the best prices.	Plan for overnight stops.