Fairfield to San Antonio

Updated: 28 May 2026

The drive from Fairfield to San Antonio is approximately 230 miles. You will take I-45 South to I-35 South, which leads you directly into San Antonio. The drive takes about 3 hours and 30 minutes, depending on traffic in Austin and San Antonio.

Total Distance: Driving distance 370 km; Air distance 320 km.

Fastest Way

Driving via I-45 and I-35 is the fastest route, taking 3.5 hours.

Cheapest Way

Driving your own vehicle is the most economical choice.

Compare Fairfield to San Antonio Routes

Driving

Direct

Duration

3 hours 30 minutes

Avg Price

45-55 dollars in fuel

Operator

Personal Vehicle

Route

I-45 to I-35

I-35 is one of the busiest highways in Texas.

Travel Tips

Traffic
I-35 is very congested; plan for delays.
Parking
Use the city parking garages near the River Walk.
Dining
Try the authentic Tex-Mex and margaritas.
Weather
Summers are very hot; stay hydrated.
Walking
The River Walk is best explored on foot.

Safety Tips

Driving
Stay alert for heavy truck traffic on I-35.
Personal Safety
Stay in well-lit areas at night.
Weather
Be aware of flash flood warnings.
Emergency
Keep your phone charged for traffic updates.