Gas prices are up across the country. Here's where you'll find the most expensive -- and cheapest -- gas

Gas prices across the United States have climbed sharply, reaching their highest level in four years as the ongoing war in Iran continues to disrupt global oil supplies.Oil prices briefly reached their highest level since the start of the war in Iran at $126 a barrel on Thursday, before falling to around $108 on Friday. This has rapidly translated into higher prices at the pump here in the U.S. and across the broader economy.STOCK PHOTO/Getty ImagesThe national average price for a gallon of regular gasoline rose to $4.43, according to fuel price tracking service GasBuddy. That's up two cents from the day before.Gas prices nationwide are now nearly $1.50 higher than they were at the start of the war.Oil prices breach $126 a barrelGasBuddy, AAAPrices are up 126 cents from last year's average of $3.172Price of gas to fill up a standard SUV with 18-gallon tankThe cost to fill up before the war for a standard 18-gallon SUV tank was $52.92, when gas was at $2.94 a gallon.Now, the cost to fill up that same tank is $79.74 with gas at $4.43 a gallon, which is a $26.82 increase.Price of gas for a Ford F-150 standard 23-gallon fuel tankThe cost