Effective August 4, 2007
"TSA is also modifying the rules associated with carrying breast milk through security checkpoints. Mothers flying with, and now without, their child will be permitted to bring breast milk in quantities greater than three ounces as long as it is declared for inspection at the security checkpoint.
Breast milk is in the same category as liquid medications. Now, a mother flying without her child will be able to bring breast milk through the checkpoint, provided it is declared prior to screening."