Can you take milk on an airplane?

A common concern that comes up a lot from parents traveling on airplanes with small children is how TSA deals with milk -- either cow milk, formula or breast milk. The short answer is YES, you can take milk in reasonable quantities through security (note: "reasonable" is obviously a judgement call, but be prepared to explain why you have the amount of food on you that you did; we had 12 food pouches on us when we flew to Singapore and were questioned on the quantity. Once we explained where we were going and that we expected our 11 month old to need one packet every 3 hours, TSA told us we were fine) . However, some things to make taking milk through security easier:

1. Carry your baby's food in a separate carry-on and declare ahead of time -- BEFORE you start putting your things in the x-ray machine -- to the TSA that you are carrying baby food. Carrying it in a separate bag will make it easier for you to take it out when TSA asks.
   
2.  If your child is old enough, you could consider using milk boxes, like the Horizon Organic ones. Unfortunately, they do not have whole milk options, but for a short trip, it might be a good and convenient option (and less messy too!).
   
3. If you are taking formula, I recommend taking powdered, not ready-to-feed formulations; I did hear one horror story from a mom who had to cancel her trip after TSA made her open every single one of her ready-to-feed formula bottles and as a result, she had to throw them out as she didn't have enough for the trip. When we traveled with formula, we always took the individual Enfamil formula packets as well the tub as a back-up. We never had a problem.
   
4. You can also ask the flight attendants for milk. We have started to take this approach because it's the easiest option.
   
5. Buy milk/water once you have passed through security. Items purchased after you go through security are perfectly acceptable to bring on the airplane.

Expect to go through additional security screening because you are bringing milk on-board an aircraft. Most of the time, this check consists of a visual screening and also scanning through a special machine that does not involve opening the package. Always be prepared, however, to actually open the food/beverage you're bringing through and plan accordingly. Once I got a full body pat-down as well.

You'll also find that strictness varies airport by airport and also day by day. When we flew to India, TSA in Newark scanned every single one of our formula packets (and we had 16!) and I noticed they were scanning another woman's baby bottles -- she had 5-6 of them. Our home airport, however, just ran 2-3 of our formula packets through their scanner, visually checked our food pouches, and called it a day. Expect the type of screening we encountered in Newark to be the norm though and plan accordingly.

As always, I recommend carrying copies of TSA guidelines on you just in case you run into someone who says you cannot bring milk for your baby through security.