Why Gas Prices Are Rising in March 2026 — and Where to Still Find Cheap Gas
Gas prices have surged nearly a dollar per gallon since the start of the Iran conflict, pushing the national average to $3.91 per gallon as of mid-March 2026. Crude oil crossed $100 a barrel for the first time in four years on March 8, and Brent briefly touched $126. For drivers filling up a 15-gallon tank, that's roughly $15 more per fill-up than just a few months ago.
But the spike isn't hitting every state equally. If you know where to look, gas under $3.25 is still available across large parts of the country.
What's Happening in the Strait of Hormuz
The crisis centers on the Strait of Hormuz, a narrow waterway between Iran and Oman through which roughly 20% of the world's oil and gas normally flows. Since hostilities escalated, tanker traffic has dropped from an average of 138 daily transits to fewer than five. That's the largest disruption to global energy supply since the 1970s oil crisis.
When crude oil can't move freely through Hormuz, global supply tightens. Refineries pay more for the crude they can get. Those costs flow downstream to wholesale gas prices, and within about a week, you see it at the pump. Some analysts have warned that sustained disruption could push crude to $200 per barrel — though most expect diplomatic efforts to prevent that scenario.
Why Some States Are Barely Affected
The states with the cheapest gas right now share a common advantage: they don't depend on oil that moves through the Strait of Hormuz. States connected to domestic pipeline networks and close to Gulf Coast refineries are largely insulated from the global price shock.
Here's where gas is still affordable:
- Kansas — averaging around $3.15/gal, the cheapest in the US. Connected to the Magellan pipeline system. Search Wichita prices
- Arkansas — $3.24/gal. Direct pipeline access from Gulf Coast refineries. Murphy USA keeps prices competitive. Search Little Rock prices
- Oklahoma — $3.22/gal. Major oil-producing state with local refining capacity. Search Oklahoma City prices
- Missouri — $3.25/gal. Central location on multiple pipeline routes. Search St. Louis prices
- Texas — $3.42/gal. Home to the largest concentration of refineries in the country. Corpus Christi, Houston, and Port Arthur refine domestic crude. Search Houston prices
Meanwhile, California is paying $5.53/gal — driven by the global crude spike plus the state's unique CARB blend requirements and high gas taxes.
How to Find Cheaper Gas Right Now
During a price spike, the spread between the cheapest and most expensive stations in your area can widen to 30-50 cents per gallon. A few strategies that consistently save money:
- Check prices before you drive. Search your ZIP code on Gas Price Check to see real-time prices sorted by cost with actual driving distances. The cheapest station 2 miles away beats the convenient one across the street.
- Fill up at warehouse clubs. Costco, Sam's Club, and BJ's typically run 15-25 cents below surrounding stations, and the gap tends to widen during spikes.
- Avoid highway stations. Stations near interstate exits typically charge 10-20 cents more than stations a half-mile off the highway.
- Fill up mid-week. Tuesday and Wednesday prices tend to be lower than Thursday through Sunday, when demand picks up.
- Keep your tires inflated. Properly inflated tires improve fuel economy by up to 3% — worth an extra 10+ cents per gallon in savings at current prices. An affordable tire pressure gauge in your glove box takes seconds to use before a fill-up.
- Clean your fuel system. A bottle of fuel injector cleaner run through your tank quarterly helps maintain peak MPG — small gains add up when gas is close to $4 nationally.
- Navigate smarter. A phone mount lets you follow turn-by-turn directions to a cheaper station across town safely, without holding your phone.
What's Next for Gas Prices
The trajectory depends almost entirely on the Strait of Hormuz situation. If tanker traffic resumes, crude prices could drop back toward $80-90 per barrel and pump prices would follow within two weeks. If the disruption continues or escalates, $4.50-5.00 national averages are possible by summer.
Either way, the structural advantage of living near domestic refining infrastructure holds. Gulf Coast and pipeline-connected states will continue to have the cheapest gas in the country regardless of where global crude goes.
→ Search gas prices in your ZIP code
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