With gas prices 80 cents a gallon higher than they were a year ago, fewer Washington area residents plan to drive when traveling over the coming holiday weekend. But AAA’s annual survey of Fourth of July weekend travel found a 22 percent jump in the number of area residents who said they plan to fly somewhere. “The high cost of gasoline is throwing a monkey wrench in the travel plans of some Washington households struggling to make ends meet,” said AAA Mid-Atlantic spokesman Lon Anderson.