100 ml Liquid Bottles on a Plane: Exact TSA Limit
Volume & Exemption Status
100 ml (3.4 fl oz) — Maximum Legal Size
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
100 ml (3.4 fl oz) is the exact international standard maximum volume for any single liquid, aerosol, or gel container carried through airport passenger security.
Related Verified Products
Vape Juice / E-Liquid
Carry-on: RESTRICTED · Checked: YES
Perfume / Cologne
Carry-on: RESTRICTED · Checked: YES
Salsa & Hot Sauce
Carry-on: RESTRICTED · Checked: YES
Shampoo & Conditioner
Carry-on: RESTRICTED · Checked: YES
Toothpaste
Carry-on: RESTRICTED · Checked: YES
Sunscreen
Carry-on: RESTRICTED · Checked: YES
Deep dive: The 3-1-1 liquids rule explained
Read what counts as a liquid, gel, aerosol, or paste at airport security.
Frequently Asked Questions
Is 3.4 oz the exact same as 100 ml?
100 ml equals 3.38 fluid ounces. Aviation authorities rounded this to 3.4 oz for US travelers.