Yes, you can bring Chick-fil-A sauce on a plane, but it must comply with the TSA 3-1-1 liquids rule if it is in your carry-on. Because sauce is classified as a liquid/gel, individual 8oz bottles or large tubs must be packed in your checked luggage. However, the small individual dipping packets are usually 1 ounce (28g) or less, meaning you can bring as many as will fit into your single quart-sized, clear plastic liquids bag along with your other toiletries. If you purchase the sauce after passing through security at an airport Chick-fil-A location, you can carry it onto the plane without any restrictions. Just be careful not to have loose packets in your pockets or scattered in your backpack, as a TSA agent may flag them as "unidentified gels" during the X-ray scan, leading to a manual bag search and a potential delay in your security screening.