Yes, you can. According to the USDA, you can store bone broth in the freezer for two to three months. However, we recommend that you use it within 45 days of freezing.
To ensure that your bone broth lasts as long as possible, we recommend that you freeze it within seven days of opening if you are not planning on using it right away.
Here is a great recipe to use up your leftover bone broth: The Kettle & Fire Blog: Bone Broth Ice Cubes