Gas prices hit $4.39 per gallon in biggest one-day jump since Iran ceasefire announced

Iran warGas prices jump to $4.39 per gallon in biggest one-day increase since Iran ceasefire announcedSince the war started, the average nationwide price of unleaded gas has risen more than 47%.Vehicles sit parked at fuel pumps as regular gasoline prices above $6 per gallon and diesel prices above $7 per gallon are displayed outside a Mobil gas station in Redondo Beach, Calif. on Thursday.Patrick T. Fallon / AFP via Getty ImagesShareAdd NBC News to GoogleMay 1, 2026, 10:22 AM EDTBy Steve KopackThe national average gas price rose to a fresh wartime high of $4.39 per gallon in its biggest one-day jump since a ceasefire with Iran was announced on April 7. It was also the biggest one day jump since early March.Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive content.On Thursday, gas prices jumped seven cents to $4.30, but overnight jumped an additional nine cents. Since the war started, the average price of gas has risen more than 47%.The steady rise for gas prices comes as crude oil extends its gain for the year to more than 80%. In early trading on Friday, U.S. crude oil traded around $103 per barrel and international benchmark Brent traded around $110 per barrel. This week, price pressures worsened as President Donald Trump said that he wants to maintain the blockade on Iranian ports, which the U.S. Navy has been enforcing since April 13. "Iran can't let Iran have a nuclear weapon, and their economy is crashing," Trump said in the Oval Office on Thursday afternoon. "The power of the blockade is incredible."Casting fresh doubt on how fast the war can be ended, Trump added, "They're not getting any money from oil, and hopefully it can be worked out very soon.""The gas will go down," Trump remarked, adding. "as soon as the war is over, it'll drop like a rock."But experts do not believe that to be the case, and most believe that the price of oil will remain elevated for an extended period of time after the war ends given that Ir...