If your child is under the age of five, then you are not going to be able to send her to Grandma’s house alone. Delta won’t allow for children to travel alone until they are at least five years of age. If your kid is anywhere from the ages of five to fourteen, she can fly alone, so long as she fly under the airline’s Unaccompanied Minor Program.
Having your child fly under Delta’s Unaccompanied Minor Program will cost you $100 each way. However, it is worth it for the safety of your child. From the moment you leave the airport until the moment the designated adult comes to pick up your child, she will always be accompanied by a Delta employee. Therefore, you will not have to worry about your child getting lost at the airport, or worse, get kidnapped by someone with bad intentions.
If your child is older than 14, she won’t be required to utilize the Unaccompanied Minor Program. However, if you feel that she is not quite ready to fully travel alone, then it might not be all that bad of an idea for her to fly under the Unaccompanied Minor Program anyway.