Gas Prices Along Interstate 820

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

Route • 1 states

About Interstate 820

A 33-mile loop around Fort Worth, TX, I-820 serves the western half of the Dallas-Fort Worth metroplex. Texas's affordability extends fully to this corridor — drivers on I-820 consistently pay well below the national average.

Avg. Price Along Route
$2.58
Est. Trip Fuel Cost
$103
Price Range
$2.56–$2.59

Gas Prices at Each Stop

Fueling Tips for Interstate 820

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Frequently Asked Questions

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 820 is generally found in Texas, where lower fuel taxes and proximity to refineries or pipelines keep prices down. Avoid fueling at highway-exit stations in Texas, where tourist premiums push prices 15-25 cents above the best nearby rates.
For a trip along Interstate 820, 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.
Gas prices along Interstate 820 vary significantly by state due to different fuel tax rates. States like Texas (20 cents/gallon), Missouri (17 cents), and Oklahoma (20 cents) consistently offer the most affordable fuel. Pennsylvania (59 cents) and California (67 cents) are among the most expensive.

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