Gas Prices Along Interstate 5

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

Route • 3 states

About Interstate 5

The West Coast's primary north-south artery running 1,381 miles from San Diego, CA to Blaine, WA. I-5 passes through California, Oregon, and Washington — three states with some of the highest gas prices in the nation. Expect to pay premium prices along this entire corridor.

Avg. Price Along Route
$4.20
Est. Trip Fuel Cost
$168
Price Range
$3.55–$4.70

Gas Prices at Each Stop

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Frequently Asked Questions

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 5 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.
Fill your tank before entering high-price states along your Interstate 5 route. Use the GasBuddy app to see upcoming prices and plan fill-up stops at the cheapest available locations. Always fill up when you have a quarter tank remaining — running low limits your options.
Interstate 5 passes through several states on its route. Oil-producing states like Texas, Oklahoma, Louisiana, North Dakota, and Wyoming typically offer the cheapest gas along any interstate that traverses them.
The average gas price along Interstate 5's route today blends prices from all the states the highway passes through. This blended average reflects both high-price and low-price state markets along the full corridor.

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