How long is the drive to San Antonio?

It is approximately 17 hours of driving time.

Is San Antonio safe for tourists?

Yes, tourist areas are generally safe.

What is the best airport for San Antonio?

San Antonio International Airport (SAT).

What is the weather like in San Antonio?

Hot and humid summers with mild winters.

Are there direct flights to San Antonio?

No, flights from DSM to SAT require a connection.

Johnston

San Antonio

Driving

Johnston to San Antonio

Updated: 30 May 2026

The drive from Johnston to San Antonio is approximately 1,150 miles. You will head south through Kansas, Oklahoma, and Texas on I-35. The journey takes about 17 hours of driving time. San Antonio is famous for the Alamo and its historic River Walk.

Total Distance: Driving distance 1,850 km, Air distance 1,600 km.

Fastest Way

Flying from DSM to SAT takes 5 hours with a connection.

Cheapest Way

Driving is the most economical for groups.

Compare Johnston to San Antonio Routes

Driving

Direct

Duration

17 hours

Avg Price

$230 in fuel

Operator

Personal Vehicle

Route

I-35 S all the way to San Antonio

Expect heavy traffic in the Dallas and San Antonio metro areas.

Travel Tips

Transport
A car is recommended for exploring the San Antonio area.
Dining
Try local favorites like Tex-Mex and breakfast tacos.
Walking
The River Walk is very walkable; explore the shops and restaurants.
Parking
Use parking garages in downtown San Antonio.
Events
Check the Fiesta San Antonio schedule if visiting in April.

Safety Tips

Personal Safety
Stay in well-populated areas, especially at night.
Driving
Be cautious of heavy traffic in the San Antonio metro area.
Emergency
Keep a list of emergency contacts and medical info handy.
Navigation
Use GPS for navigating the city.