Gas Prices in Idaho Falls, ID Today

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

$3.41

Average Regular Unleaded — Idaho Falls, Idaho

Current Gas Prices in Idaho Falls

Idaho Falls, Idaho motorists pay $$3.41 per gallon on average for regular gas today. The city's Northwest market dynamics and the presence of {brandNote} stations influence what local drivers pay at the pump.

Fuel TypePrice / GallonGradeTrend
Regular Unleaded$3.4187 octane▲ Rising
Mid-Grade$3.9489 octane▲ Rising
Premium$4.2691-93 octane▲ Rising
Diesel$4.62N/A▲ Rising

Price Comparison

Idaho Falls Average
$3.41
Regular Unleaded
Idaho State Average
$3.18
$0.23 above the Idaho average
National Average
$3.99
$0.58 below the national average

About Gas Prices in Idaho Falls

Idaho Falls's fuel market is shaped by several intersecting forces. Its Northwest supply chain means most supply arrives through regional pipeline networks. During spring switchover to summer fuel blends, prices in Idaho Falls typically rise 8-12 cents before stabilizing. The most competitive stations cluster near major retail corridors and highway commercial zones.

Gas Prices by Brand in This City

Estimated prices based on brand modifiers. Sorted cheapest to most expensive.

CHEAPEST
Costco
$3.26
Speedway
$3.38
Circle K
$3.39
Sunoco
$3.42
Marathon
$3.43
BP
$3.45
Mobil
$3.46
Exxon
$3.47
Shell
$3.49
Chevron
$3.51

Fuel Type Prices in This City

Regular Unleaded
87 octane
Premium Gasoline
91-93 octane
Diesel Fuel
N/A
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Frequently Asked Questions

At today's Idaho Falls average of $$3.41 per gallon, a standard 13-gallon sedan tank costs ${fillCost} to fill. A larger 20-gallon SUV or truck tank runs ${truckFill}. Choosing the cheapest local station can save $3-5 on each fill-up.
Monday and Tuesday are statistically the cheapest days to buy gas in most US cities including Idaho Falls. Prices rise Thursday through Sunday as weekend driving demand increases. Filling up Tuesday afternoon before price adjustments is a reliable strategy.
Idaho Falls and surrounding cities typically track similar fuel prices given shared supply infrastructure. Differences of 5-15 cents between nearby cities are common depending on local tax differences and competition levels.
A 10-cent savings on 15 gallons equals $1.50. If the cheaper station is 5 miles away and your car gets 25 MPG, the detour costs about 0.4 gallons. Savings above 15 cents per gallon are consistently worth moderate detours.
Most states have price gouging statutes that activate during declared emergencies. Outside of emergency declarations, gas stations set prices based on market conditions. Normal price variation between stations is competition, not gouging.

Related Gas Price Pages

Gas Prices in IdahoCheapest Gas in Idaho FallsGas Prices Near Idaho FallsCompare All StatesRegular Unleaded in Idaho FallsPremium Gasoline in Idaho FallsDiesel Fuel in Idaho FallsShell - Idaho FallsExxon - Idaho FallsBP - Idaho FallsChevron - Idaho FallsMobil - Idaho Falls