Gas prices in Port Arthur, TX today
Updated Oct 17, 2026, 12:42 PM
Price by chain — today
Chain prices are estimates. We start from the Texas state average ($3.91/gal regular today) and apply typical per-chain offsets. Live per-station pricing coming soon.
cheapest
Murphy USA
$3.79
— no change
Buc-ee's
$3.83
— no change
HEB Gas
$3.86
— no change
Valero
$3.89
— no change
Exxon
$3.96
— no change
Conoco
$3.97
— no change
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Stations sorted by price
Gas prices in Port Arthur, Jefferson County are updated hourly.
Port Arthur is a city of 56,039 residents in East Texas.
The cheapest regular unleaded today is $3.788/gal at Murphy USA — filling a 15-gallon tank costs $56.82.
Compared to the Texas state average of $3.908/gal, Port Arthur 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
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Fuel prices & local data — Port Arthur, TX ⛽
12:42 PM CT
Jefferson CountyEast TexasUS-69 corridor56,039 residents16 ft elevation
Port Arthur hosts the Motiva Port Arthur Refinery — the largest refinery in the United States at 730,000 bbl/day as of 2025 — along with Valero Port Arthur (435,000 bbl/day) and TotalEnergies refineries nearby.
56K
population
1.9
vehicles / household
30%
truck ownership
~$288
est. monthly fuel
What is the cheapest gas station in Port Arthur, TX right now?
Murphy USA is currently the cheapest at $3.79/gal for regular unleaded. Prices last updated Oct 17, 2026, 12:42 PM.
Source: AAA Texas, updated Oct 17, 2026, 12:42 PM CT
How much does a full tank cost in Port Arthur, TX?
At current prices, filling a 15-gallon tank costs $56.82 at Murphy USA. A 20-gallon tank costs $75.76.
Source: AAA Texas, updated Oct 17, 2026, 12:42 PM CT
Why is gas in Port Arthur, TX often cheaper than the Texas average?
Port Arthur, TX sits near Motiva Port Arthur — 730,000 bbl/day (largest in US as of 2025), plus Valero Port Arthur 435,000 bbl/day — roughly 1 mile away. Refinery-cluster direct access — Port Arthur typically has the very lowest gas prices in Texas. Finished fuel travels US-69 to local terminals.
Source: AAA Texas, updated Oct 17, 2026, 12:42 PM CT