Breast Milk & Baby Formula on a Plane: Infant Exemption Rules
Volume & Exemption Status
Infant Nutrition Exempt — Permitted in Large Quantities
Governed by international 100 ml (3.4 fl oz) LAGs regulations
💧 3-1-1 liquids rule checker
One quart-size (≈1 L) bag per passenger; every container must be 3.4 oz (100 ml) or less.
Fit is approximate — container shape decides real-world packing. Medically necessary liquids and infant food are exempt: declare them. Packing a whole bag? Plan it container by container →
TSA & Aviation Security Rule Summary
Breast milk, baby formula, toddler purees, and sterilized nursery water are classified as medically necessary liquids. They are permitted in carry-on bags in quantities greater than 100 ml (3.4 oz), even if the infant is not traveling with you.
Related Verified Products
Deep dive: What counts as a liquid on a plane
Read what counts as a liquid, gel, aerosol, or paste at airport security.
Frequently Asked Questions
Can I travel with frozen breast milk and gel ice packs?
Yes. Ice packs and cooler packs for breast milk are permitted through security. If frozen solid, they pass X-ray standard screening; if partially slushy, screeners test them separately.