Formula, breast milk, toddler drinks, and baby/toddler food (to include puree pouches) in quantities greater than 3.4 ounces or 100 milliliters are allowed in carry-on baggage and do not need to fit within a quart-sized bag.

In 2026, parents traveling with an infant (usually under age 2) are permitted to carry "reasonable quantities" of baby milk, formula, and sterilized water that exceed the standard 100ml liquid limit. While "reasonable" is subjective, security agents typically allow enough to cover the duration of the journey plus any potential delays. In most major airports (like Heathrow or JFK), individual containers of baby milk can be as large as 2 liters, provided they are presented for separate screening. The milk does not need to be in a 1-quart clear bag, but you must take it out of your carry-on for inspection. It is important to note that the milk must be in liquid form, as frozen milk is often subject to different "solid" rules. In 2026, some airports with advanced CT scanners allow these liquids to stay in the bag, but the general rule remains: if you're traveling with a baby, the 100ml limit does not apply to their essential food and milk.

Excellent question! This is a very common concern for traveling parents. The rules are designed to be flexible for families with infants and toddlers.

Here’s the clear breakdown of what you can take through airport security, based on TSA (U.S.) and similar international regulations:

The Short Answer:

You can take a “reasonable quantity” of baby milk (formula, breast milk, toddler milk) through airport security in your carry-on luggage, even if it exceeds the standard 3.4 oz (100ml) liquid limit. It does not need to fit in your quart-sized liquids bag.

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The Detailed Rules (Primarily for U.S. TSA):

1. Exemption from the 3-1-1 Rule: Baby milk is considered a medically necessary liquid. This exemption applies to:

   • Breast milk
   • Formula
   • Toddler milk
   • Baby/toddler food (puree pouches, jars, etc.)
   • Ice packs, freezer packs, gel packs needed to cool these items are also exempt.

2. “Reasonable Quantity”: There is no official volume limit (like “only 8 ounces”). The TSA officer has discretion, but it is generally understood to mean what you reasonably need for the duration of your travel and potential delays. A day’s worth for your flight and layovers is almost always fine. Bringing gallons of milk might raise questions, but large quantities for international trips are typically accepted with explanation.

3. You Must Declare It: This is the most important step. When you approach the security checkpoint, take the milk/food out of your bag and inform the TSA officer that you are carrying “medically necessary liquids” for an infant/toddler. Do this before your items go through the X-ray.