If this is college, I would wait until after classes have started before you make any trip plan. My kid’s professors to date have all been very reasonable, but they do not need be. When students take the exam early, professor often has to create different exams to prevent cheating, and it is extra work. You can always meet up with your family after you are finished with your finals. It is only Mar, there is no reason to have to make flight reservation so early. A lot of students fly cross country to go home for holidays, and they do not make such plans until they know their exam schedule.