This could be the busiest Memorial Day weekend in a decade. At least 37 million Americans are expected to travel 50 miles or more from home to kick off the unofficial start of summer.

As reported by the Associated Press, AAA estimated 33 million people would travel by car during the holiday weekend, 5.3% more than last year.

The motor club doesn’t expect gas prices to significantly increase before the weekend, giving motorists the lowest prices in five years. Gas is at its highest price of 2015, averaging $2.66 per gallon, but that’s a dollar less than this time last year.

Drivers on the West Coast pay the most to fuel up their vehicles. In California, Nevada, Oregon, Alaska and Hawaii, gas averages are more than $3 per gallon.

In South Carolina, Missouri and Mississippi, drivers pay an average of $2.38 per gallon for gas, which is the lowest in the nation.

AAA expected holiday air travel to increase 2.5% over the long weekend. They expect a decrease in travel by buses, trains and cruises.