Port Isabel Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Week Ago Avg. | $2.99 | $3.42 | $3.77 | $3.68 | - |
| Month Ago Avg. | $2.78 | $3.07 | $3.54 | $3.18 | - |
Highest Recorded Average Gas Price In Port Isabel Year to Date
| Price | Date | |
|---|---|---|
| Diesel | $3.71 | 07/01/26 |
| Regular | $3 | 07/01/26 |
Top 10 Gas Stations & Cheap Fuel Prices in Port Isabel
Murphy USA in Port Isabel (1405 Hwy 100)
1405 Hwy 100, Port Isabel, Texas,
$3.65
Jul 07, 2026
0¢ Cashback
Murphy USA in Port Isabel (1405 Hwy 100)
1405 Hwy 100Port IsabelTexas78578US
Valero in Port Isabel (102 E. Queen Isabella Blvd.)
102 E. Queen Isabella Blvd., Port Isabel, Texas,
$4.03
Jul 07, 2026
0¢ Cashback
Valero in Port Isabel (102 E. Queen Isabella Blvd.)
102 E. Queen Isabella Blvd.Port IsabelTexas78578USA
Sunoco in Port Isabel (1685 TX-100)
1685 SH-100, Port Isabel, Texas,
$4.09
Jul 07, 2026
0¢ Cashback
Sunoco in Port Isabel (1685 TX-100)
1685 SH-100Port IsabelTexas78578USA
Murphy USA in Port Isabel (1405 Hwy 100)
1405 SH-100, Port Isabel, Texas,
$4.11
Jul 07, 2026
0¢ Cashback
Murphy USA in Port Isabel (1405 Hwy 100)
1405 SH-100Port IsabelTexas78578USA
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Gas Data Methodology
The fuel prices published in this guide are based on the results of research completed by Way.com’s data team. Using a mix of external and internal data, we analyzed millions of prices across U.S. ZIP codes and globally.