You need to get to your vacation destination, and unless you’re just driving a few hours away from home, this will probably be a big part of your budget. In my example at the bottom of the post, you can see that airfare accounted for nearly half of the travel budget. Start your research here to get an estimate for what this will cost.
If you’re going from one continent to another, this probably means looking at airfare. If you’re going a shorter distance, it’s worth looking into other forms of transportation to see which works best for you.