The weekends in the summer are both the busiest and most expensive times to take a trip, according to the U.S. Travel Association. The price of gas, hotels and plane tickets automatically rise due to demand and high traffic. Often, vacation budgets are exceeded. Although fluctuating prices cannot be controlled, there are other ways to cut down on surprise vacation costs.

“It can be frustrating to discover hidden fees and costs when vacationing, especially if you’re trying to stick to a budget,” said Suzanne Symcox, executive vice president for First Fidelity Bank in Tulsa. “The best way to avoid these pitfalls is to plan out how you can save money. That way, if unexpected costs show up, they don’t send you into a budgetary tailspin.”

Here is a money-saving tip for lowering vacation costs:

Skip convenience store snacks. Convenience is certainly a plus when traveling, but it’s not always worth the cost. Planning for a few meals on the road can help you save time and money. The average family of four can easily spend between $50-70 each way on a road trip buying snacks. Instead, buy the food in bulk ahead of time or pack sandwiches and snacks before you leave.