Gas Prices Along Interstate 12

Updated April 5, 2026 — Prices updated regularly from EIA data

Route • 1 states

About Interstate 12

A 86-mile connector in Louisiana running from Baton Rouge to Slidell along Lake Pontchartrain's north shore. As a Louisiana highway, I-12 offers some of the cheapest gas in America given the state's minimal fuel taxes and abundant refineries.

Avg. Price Along Route
$2.78
Est. Trip Fuel Cost
$111
Price Range
$2.70–$2.86

Gas Prices at Each Stop

Fueling Tips for Interstate 12

American Eagle Gold Set

Making the Most of Every Road Trip

Smart travelers combine fuel savings with great American collectibles. Limited offers available for road trip enthusiasts.

Claim Yours Now →

Frequently Asked Questions

Interstate 12 passes through or near major cities where competitive fuel markets and warehouse clubs offer the best prices. Look for Costco, Sam's Club, or high-volume discount stations in each major metro along your route.
A 2-mile detour to save 20 cents per gallon on a 15-gallon fill-up saves $3. With a car getting 28 MPG, the detour uses 0.14 gallons. Detours above 3-4 miles for savings under 20 cents per gallon are generally not worthwhile.
The cheapest gas along Interstate 12 is generally found in Louisiana, where lower fuel taxes and proximity to refineries or pipelines keep prices down. Avoid fueling at highway-exit stations in Louisiana, where tourist premiums push prices 15-25 cents above the best nearby rates.
For a trip along Interstate 12, a vehicle averaging 25 MPG would use approximately 1 gallon per 25 miles. At current average prices along the route, budget approximately {perMileCost} cents per mile for fuel. Plan fill-ups in lower-price states whenever possible.
Yes — consistently. Highway-exit gas stations charge 10-25 cents more per gallon than stations just 1-2 miles off the interstate. Whenever possible, exit the highway and drive to a commercial area for competitively priced fuel.

Related Gas Price Pages

Gas Prices Along Interstate 5Gas Prices Along Interstate 10Gas Prices Along Interstate 15Gas Prices Along Interstate 20Gas Prices Along Interstate 25Gas Prices Along Interstate 35Gas Prices Along Interstate 40Gas Prices Along Interstate 55Gas Prices Along Interstate 65Gas Prices Along Interstate 70Gas Prices Along Interstate 75Gas Prices Along Interstate 80Gas Prices Along Interstate 85Gas Prices Along Interstate 90Gas Prices Along Interstate 95Gas Prices Along Interstate 4Gas Prices Along Interstate 8Gas Prices Along Interstate 24Gas Prices Along Interstate 26Gas Prices Along Interstate 30Gas Prices Along Interstate 44Gas Prices Along Interstate 45Gas Prices Along Interstate 64Gas Prices Along Interstate 66Gas Prices Along Interstate 68Gas Prices Along Interstate 69Gas Prices Along Interstate 71Gas Prices Along Interstate 76Gas Prices Along Interstate 77Gas Prices Along Interstate 78Gas Prices Along Interstate 81Gas Prices Along Interstate 84Gas Prices Along Interstate 87Gas Prices Along Interstate 88Gas Prices Along Interstate 91Gas Prices Along Interstate 93Gas Prices Along Interstate 94Gas Prices Along Interstate 96Gas Prices Along Interstate 97Gas Prices Along Interstate 99Gas Prices Along Interstate 278Gas Prices Along Interstate 376Gas Prices Along Interstate 390Gas Prices Along Interstate 405Gas Prices Along Interstate 495Gas Prices Along Interstate 285Gas Prices Along Interstate 610Gas Prices Along Interstate 635Gas Prices Along Interstate 820Compare All 50 StatesRoad Trip Calculator