With thanks to utahkritter, who got this information from TSA:
This is the e-mail I got from TSA. I am going to print it and bring it with me.
Thank you for your e-mail regarding traveling with breast milk and other food items
for infants and toddlers.
Passengers flying with or without an infant or toddler may bring more than 3.4
ounces of breast milk (in a liquid or frozen state) through the security checkpoint,
but it will be subjected to additional screening. The breast milk must be separated
from other liquids, gels, and aerosols; and declared to the Transportation Security
Officer (TSO) prior to entering the screening checkpoint.
Although the Transportation Security Administration (TSA) does not specifically
limit the amount of breast milk or other items a passenger may bring in their
carry-on bags, we encourage travelers to be practical about these amounts. The
amount should be reasonable and consistent with the traveler's itinerary. All
passengers are encouraged to ask to speak with a supervisor at the security
checkpoint if they have any questions or concerns with these procedures.
Individuals are also allowed to bring more than 3.4 ounces of pre-mixed baby formula
(in a liquid or frozen state), milk products, juice, gel or liquid-filled teethers,
canned, jarred, or processed baby food into the screening checkpoint. These items
must be declared to a TSO prior to the passenger entering the screening checkpoint
and the items must be separated from other liquids, gels, and aerosols. These items
also will be subjected to additional screening.
Please note, modifications also allow bottled water, presented as an infant or
toddler medical exemption, into the secured area after it receives additional
screening. Passengers traveling with bottled water necessary for medical reasons
and/or intended for their infant's or toddler's use through the security checkpoint
. declare it to the TSO prior to entering the screening checkpoint and prior to
. inform the TSO that the bottled water is necessary for medical reasons and/or
intended for an infant or toddler; and
. open the bottle for additional screening, if required by a TSO.
Frozen gels and liquids are permitted if required to cool medical and infant/child
We recognize that the information on our website is not all inclusive and that many
passengers have additional concerns regarding traveling with items intended for use
by infants and toddlers. Many of these concerns include how the current screening
procedures accommodate the handling of essential food items passengers must carry
onboard the plane for their infant or toddler, such as breast milk, milk products,
formula (to include related mixing products), baby food, and juice.
Breast milk and other liquids and gels intended for infants or toddlers are in the
same category as medical liquid exemptions and are normally x-rayed and will always
be subjected to additional screening if in containers larger than 3.4 oz. However,
as a customer service, TSA allows a passenger the option of a visual inspection of
these items. A passenger must request a visual inspection before screening begins;
otherwise, all of the items must undergo x-ray inspection. If an item is not
x-rayed, in addition to a visual inspection of the items, TSOs will test the items,
including breast milk, for explosives. Passengers may be required to open the
containers but will never be asked to test or taste any of these items. If
containers cannot be opened, the containers may be allowed into the sterile area
after the passenger is subjected to additional screening.
TSA continues to explore opportunities to further modify screening procedures to
minimize the concerns of passengers without compromising aviation security. The
most current processes in place for bringing breast milk and other food-related
items intended for infants and young children safely through the security screening
checkpoint can be found at www.tsa.gov/travelers/airtravel/children/formula.shtm
Passengers are also invited to contact their airline in advance to request any
special accommodations for their flight. In addition, please visit our website
regularly for updates to special screening procedures.
We hope this information is helpful.
TSA Contact Center