In general, travelers are only permitted to transport 3.4 ounces (100 ml) or less of liquid in their carry-on luggage; however, this restriction does not apply to milk or food for newborns and small children.
Baby food is permitted in reasonable quantities in carry-on luggage. You'll have to have these goods inspected separately from the rest of your luggage, so take them out of your carry-on bag.
Formula, breast milk, and juice in quantities of more than 3.4 ounces (100 milliliters) are permitted in carry-on luggage; quart-sized bags are not required. Formula and breast milk are regarded as medically required liquids. This is also true for equipment used to pump breast milk. To carry breast milk, you do not need to travel with your child.
Carry-on bags may also contain ice packs, freezer packs, frozen gel packs, and other accessories needed to cool juice, formula, and breast milk. Additionally, you are allowed to bring canned, jarred, and processed baby food in carry-on luggage, as well as teethers filled with gel or liquid.
If you have formula, breast milk, or juice that is larger than 3.4 ounces, tell the TSA officer before the screening procedure even begins. To have these goods inspected separately from the rest of your luggage, take them out of your carry-on bag. The liquids may need to be tested by TSA agents for explosives or hidden contraband. Officers may ask you to open the container, transfer a tiny amount of the liquid to an empty container, or, if possible, dispose of a small amount. Explosive trace detection, X-ray, and liquid container screening are a few methods that may be used to screen these substances.
You may request the TSA officer not to open or X-ray the juice, formula, or breast milk, but you may need add to go through further screening processes, which may involve additional screening of other carry-on items.
Even if you are on a short flight, we advise bringing twice as much milk as you think your baby will need, just to be ready in case of any delays, spills, lineups, or misplaced luggage.
Officers in charge of security screening have the final say on what is a "reasonable amount," but they probably won't bat an eye if your carry-on bag is full of baby food.
Most flight attendants won't mind warming up your baby's milk or meals once you're on board. We've found that when you get it back, it's often too hot, so try to allow additional time to cool it down to a comfortable temperature.
Rules can be different from country to country, so it's important to find out what's allowed at your specific travel destination. Airport websites are usually a good place to find out everything you need to know about what you can and can't bring for your baby.