There are a few different ways that you can pack jeans in your suitcase. One way is to fold them in half lengthwise and then roll them up tightly. Another way is to fold them in thirds or quarters, depending on the size of the jeans, and then roll them up tightly. Whichever method you choose, make sure that you pack the jeans in a way that they will not take up too much space in your suitcase.