How gas prices have changed in San Antonio in the last week
Written by:
May 18, 2026
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How gas prices have changed in San Antonio in the last week
Stacker compiled statistics on gas prices in San Antonio, TX metro area using data from AAA. Gas prices are current as of May 18.
San Antonio by the numbers
- Gas current price: $3.93
--- Texas average: $3.98
- Week change: -$0.09 (-2.1%)
- Year change: +$1.07 (+37.4%)
- Historical expensive gas price: $4.68 (6/13/22)
- Diesel current price: $4.96
- Week change: -$0.16 (-3.2%)
- Year change: +$1.82 (+58.0%)
- Historical expensive diesel price: $5.45 (4/9/26)
Metros with the least expensive gas
#1. McAllen-Edinburg-Mission, TX: $3.78
#2. Brownsville-Harlingen, TX: $3.79
#3. Laredo, TX: $3.80
Read on to see which metros have the most expensive gas prices.
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1 / 5
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#5. San Luis Obispo-Atascadero-Paso Robles, CA
- Regular gas price: $6.30
2 / 5
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#4. San Rafael, CA
- Regular gas price: $6.31
3 / 5
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#3. San Francisco, CA
- Regular gas price: $6.31
4 / 5
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#2. Salinas, CA
- Regular gas price: $6.31
5 / 5
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#1. Napa, CA
- Regular gas price: $6.37
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