And if your child is out of state, potentially more often.
As someone who has a freshman out of state I would highly recommend looking at what airlines fly to and from school, preferably direct. Southwest is a great choice. They allow 2 free checked bags and have a great cancellation policy. You can book early and if plans change or prices drop you can cancel/rebook. There are no cancellation fees. They don’t refund your money but you receive a credit.