Only if you enjoy long road trips; otherwise, flying is better.

How long is the flight?

Usually 6 hours with a layover.

What is the best airport?

San Antonio International Airport (SAT).

Are there direct flights?

No, you will likely have a layover in Houston or Dallas.

Is San Antonio walkable?

The downtown area is, but the rest of the city requires a car.

Sullivan's Island

San Antonio

Flight Driving

Sullivan's Island to San Antonio

Updated: 28 May 2026

The trip from Sullivan's Island to San Antonio is a long-distance journey of nearly 1,900 kilometers. Driving requires crossing several states, including Georgia, Alabama, Mississippi, and Louisiana. Flying is the highly recommended mode of transport due to the distance. San Antonio is famous for the Alamo and its historic River Walk.

Total Distance: 1,900 km driving, 1,650 km air distance.

Fastest Way

Flying is the fastest, taking about 6 hours total.

Cheapest Way

Driving is cheaper for large groups, but flying is more efficient for solo travelers.

Compare Sullivan's Island to San Antonio Routes

	Flight Connecting	Driving Direct
Duration	6 hours	19 hours
Avg Price	$400 - $700	$300 in fuel
Operator	United Airlines	Personal Vehicle
Route	CHS to IAH to SAT.	I-26 W to I-20 W to I-10 W.
Tip	Connecting through Houston is the most common route.	Plan for at least two days of driving with an overnight stop in Louisiana.

Travel Tips

Hydration
Texas heat can be intense; carry water at all times.
Sun Protection
Wear sunscreen and hats, especially when walking the River Walk.
Time Zone
San Antonio is in the Central Time Zone, one hour behind South Carolina.
Local Cuisine
Try authentic Tex-Mex food at local restaurants near the Pearl District.
Airport Transport
Use ride-sharing services from SAT airport to reach downtown.

Safety Tips

Driving Fatigue
If driving, do not push past your limits; stop for rest every 4 hours.
Weather Alerts
Monitor local news for flash flood warnings during storm season.
Crowds
Keep your belongings secure in crowded tourist areas like the River Walk.
Emergency
Save the number for local roadside assistance if driving across Texas.