Yes, but check with the TSA website before leaving on your trip because the rules can change at any time!
It's a good idea to bring double the amount of breast milk or formula you think you will need on a trip because travel delays are common, and most airports do not sell formula. When going through security, let the agents know that you are traveling with liquids, and they will give you instructions about to how to proceed.
You can also bring your breast pump along when traveling. However, most airports are painfully devoid of a place to pump, so make sure your pump has its portable battery ready in case you need to pump in a stall!