Gas prices in San Antonio, TX today
Updated Jun 14, 2026, 8:50 AM
Price by chain — today
cheapest
Murphy USA
$3.68
— no change
3 stations nearby
HEB Gas
$3.69
— no change
4 stations nearby
QuikTrip
$3.69
— no change
5 stations nearby
Walmart Neighborhood Market
$3.69
— no change
2 stations nearby
Valero
$3.69
— no change
10 stations nearby
Exxon
$3.72
— no change
3 stations nearby
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Stations sorted by price
Gas prices in San Antonio, Bexar County are updated hourly.
San Antonio is a city of 1,434,625 residents in Central Texas.
The cheapest regular unleaded today is $3.680/gal at Murphy USA — filling a 15-gallon tank costs $55.20.
Compared to the Texas state average of $3.624/gal, San Antonio drivers pay close to the statewide average.
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gas price
Price per gallon
Murphy USA · Regular
$2.79
Passengers
1
2
3
4
5
6
Distance
239 mi
Houston → Dallas
Total fuel cost
—
Per person
—
Nearby cities
Fuel prices & local data — San Antonio, TX ⛽
8:50 AM CT
Bexar CountySan Antonio MetroI-35 corridor1,434,625 residents650 ft elevation
San Antonio is home to Valero Energy's corporate headquarters and to H-E-B's headquarters — two Texas fuel-economy giants based in the same city.
1.4M
population
1.9
vehicles / household
24%
truck ownership
~$280
est. monthly fuel
What is the cheapest gas station in San Antonio, TX right now?
Murphy USA is currently the cheapest at $3.68/gal for regular unleaded. Prices last updated Jun 14, 2026, 8:50 AM.
Source: GasBuddy via Apify, updated Jun 14, 2026, 8:50 AM CT
How much does a full tank cost in San Antonio, TX?
At current prices, filling a 15-gallon tank costs $55.20 at Murphy USA. A 20-gallon tank costs $73.60.
Source: GasBuddy via Apify, updated Jun 14, 2026, 8:50 AM CT
Why is gas in San Antonio, TX often cheaper than the Texas average?
San Antonio, TX sits near CITGO Corpus Christi pipeline network, Valero HQ San Antonio — roughly 140 miles away. Local Valero and H-E-B competition plus pipeline access from Gulf Coast refineries keeps SA prices close to the state average. Finished fuel travels I-35 to local terminals.
Source: GasBuddy via Apify, updated Jun 14, 2026, 8:50 AM CT
How does Joint Base San Antonio (Lackland, Randolph, Fort Sam Houston) affect San Antonio, TX gas demand?
San Antonio is adjacent to Joint Base San Antonio (Lackland, Randolph, Fort Sam Houston), and its shift changes drive predictable fuel-demand surges. I-35 through San Antonio runs from Laredo to the DFW area and carries heavy NAFTA freight traffic that meets local commuters on the same roads.
Source: GasBuddy via Apify, updated Jun 14, 2026, 8:50 AM CT