TravelMath provides an online cost calculator to help you determine whether it's better to fly or drive to your destination. You can calculate the cost of getting to the airport and booking a flight versus paying for gas and driving your own car or a rental car. There are lots of other factors, like travel time, number of passengers, hotel stops, and other details that can affect your decision. So while we offer a quick "best case scenario" that is completely automated, you also have the option to customize every detail to your particular needs. Use this tool to find out if it's cheaper to fly or drive to your destination!