"We've seen prices rising since about the Fourth of July because, of course, this is the heart of the summer travel season", said Gail Weinholzer of AAA.
Hurricane Harvey, which wiped out almost a quarter of USA gas-refining capacity when it inundated parts of Texas and Louisiana, is sending gas prices up across the U.S.
Nationally, the price has increased by 20 cents per gallon to $2.56 in one week, according to the survey.
The inclement weather and "spikes in gas prices typically do not inhibit holiday travel plans", said Herman Jenkins, a spokesman for AAA's East Central Pennsylvania region.
Labor Day travelers may find gas prices ranging from a tad over $1.61 to more than $3.10 a gallon for unleaded regular, depending on where they filler 'er up. He said Thursday, Friday and Saturday this week "will be days where we see the biggest increases". "Not as significantly in the Upper Midwest where we do get our refinery fuel from places like Coates, Minnesota and Joliet, Illinois", said Weinholzer.
"It was $2.25 a gallon only a couple days ago, it is up now", Singh said.
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"Summer is behind us and the demand has dropped, and since Labor Day is the last long weekend of the summer, many people tend to make their trips earlier in the summer", she said.
Harvey's impact on gasoline prices was heightened because Houston "is the epicenter of the USA refinery community", according to Mac. It's among several southern states that are heavily reliant on the Colonial Pipeline for deliveries of gasoline.
The slowed flow of gasoline after Hurricane Harvey is hitting Maryland drivers right before they hit the road for the holiday.
Gas prices are up 25 cents a gallon in Maryland and will keep climbing, but experts say people are paying the higher costs to travel for Labor Day.
The lowest Florida prices are in Tampa, with an average gallon of $2.46.