Filling up for a Memorial Day road trip has not stung this badly since 2022. The national average price of regular gasoline reached $4.50 per gallon for the week ending May 11, 2026, according to the U.S. Energy Information Administration (EIA), with daily readings ticking as high as $4.53 at some points during the week. A year ago, according to EIA historical weekly data, drivers were paying about $3.12 for the same gallon. On the diesel side, the national average sat at roughly $4.75 per gallon for the same week, a detail that matters for anyone towing a camper or boat with a diesel pickup or hitting the road in a diesel-powered RV.
Put that increase in road-trip terms: a family driving 1,000 miles in a mid-size sedan or crossover averaging 25 miles per gallon will burn through about 40 gallons. At today’s prices, that is roughly $180 in fuel, up from about $125 last Memorial Day weekend. The difference, about $54, vanishes from the vacation budget before anyone pays for a hotel room, a restaurant meal, or a national park pass.
Why prices jumped so sharply
The spike did not come from a single cause. Global crude oil costs climbed through the spring as OPEC+ production cuts tightened supply worldwide. At the same time, U.S. refineries were running through scheduled seasonal maintenance, temporarily pulling domestic gasoline output offline at the worst possible moment. On top of that, refineries completed their annual switch to summer-blend gasoline formulations, which are costlier to produce but required under federal air-quality rules. That transition alone typically adds 10 to 15 cents per gallon, according to EIA analyses. Stack all three factors together with steady consumer demand, and the result is what EIA weekly price data shows to be the sharpest year-over-year Memorial Day price jump since 2022.
Where drivers are paying the most
The $4.50 national average hides enormous regional gaps. EIA data broken down by Petroleum Administration for Defense Districts (PADD regions) shows the West Coast running well above the rest of the country, with California stations frequently clearing $5.25 per gallon thanks to higher state taxes and stricter fuel-blend mandates. Gulf Coast states like Texas and Louisiana sit at the opposite end, often 40 to 60 cents below the national average, benefiting from close proximity to refineries and lower state fuel taxes.
That gap has real consequences for trip planning. A driver heading from Los Angeles to Las Vegas faces a meaningfully different fuel bill than someone covering the same distance from Houston to New Orleans, even in an identical vehicle.
The 25-mpg assumption, and who pays more
The $54 increase assumes a vehicle getting 25 miles per gallon, which tracks with the real-world average for the current U.S. passenger fleet based on EPA estimates. But Memorial Day highways are crowded with full-size pickups and SUVs that get closer to 18 or 20 mpg. At 20 mpg, that same 1,000-mile trip burns 50 gallons, and the year-over-year cost increase climbs to roughly $69. Hitch a boat or camper to the back and fuel economy drops further still. Diesel-truck owners towing heavy loads may see effective mileage dip into the low teens, pushing total fuel costs for 1,000 miles well above $300 at current diesel prices.
How to trim your fuel bill this weekend
No one can control crude oil markets from the driver’s seat, but a few practical moves can take some of the sting out:
- Fill up before you leave town. Stations near interstate on-ramps and highway rest stops routinely charge 20 to 40 cents more per gallon than competitors a mile or two off the exit. Apps like GasBuddy and Waze display real-time local prices and can pay for themselves in a single stop.
- Check warehouse clubs. Costco and Sam’s Club stations often price fuel 15 to 30 cents below nearby competitors. Lines can be long on holiday weekends, so filling up Thursday evening is worth the effort.
- Ease off the accelerator. The Department of Energy estimates that every 5 mph over 50 mph costs drivers the equivalent of roughly $0.20 to $0.40 more per gallon in lost fuel economy. Using cruise control on flat highway stretches helps maintain a steady, efficient speed.
- Ditch the roof box if you can. Roof-mounted cargo carriers and bike racks increase aerodynamic drag significantly. The DOE notes that a large rooftop cargo box can cut fuel economy by 10 to 25 percent at highway speeds. Packing inside the vehicle or using a hitch-mounted carrier reduces that penalty.
- Stack credit card rewards. Several gas station co-branded cards and general cash-back cards offer 3 to 5 percent back on fuel purchases. At $4.50 a gallon, that works out to 13 to 22 cents off per gallon in effective savings, which adds up over a multi-fill-up trip.
Hybrid owners averaging 45 mpg come out far better on any of these routes, spending about $100 total for 1,000 miles with a year-over-year bump closer to $30. Drivers of fully electric vehicles skip the pump entirely, though public fast-charging along a long highway route is not free, with rates typically ranging from $0.30 to $0.60 per kilowatt-hour depending on the charging network and location.
What EIA and hurricane season signal for June gas prices
Memorial Day traditionally kicks off peak summer driving season, and prices do not always retreat once the weekend ends. The EIA’s Short-Term Energy Outlook, due for its next monthly update in June 2026, will offer a clearer read on whether $4.50-plus gasoline is a temporary spring peak or the new floor through August. Atlantic hurricane season, which begins June 1, adds another layer of uncertainty: storms that knock Gulf Coast refining capacity offline have historically triggered sharp, sudden price spikes that ripple across the country within days.
For the millions of Americans expected to drive 50 miles or more over Memorial Day weekend, the math is already settled. Gas is substantially more expensive than it was a year ago, the increase stretches across every region, and that extra $54 per thousand miles will show up in tighter budgets for everything else along the route.
