HOUSTON (AP) -- Retail gasoline prices across Texas have risen 2 cents as travelers prepare for the long Memorial Day holiday weekend.

AAA Texas on Wednesday reported the average price at the pump reached $3.43 per gallon. Nationwide retail gasoline prices jumped 6 cents this week to hit $3.66 per gallon.

Amarillo has the most expensive gasoline in Texas at $3.74 per gallon. The association survey found Corpus Christi with the cheapest gasoline at $3.33 per gallon.

AAA Texas says demand for fuel is expected to increase with the Memorial Day holiday marking the unofficial start of summer.

The travel group predicts 2.9 million Texans will travel 50 miles or more from home during the holiday period - defined as Thursday to Monday. That's about a 1 percent increase from last year.