What is the 1 3 1 rule for flying?

The 1-3-1 Rule for Carry-On Liquids: A Concise Guide

Air travel security has become a crucial aspect of the journey, and understanding the 1-3-1 rule is essential for hassle-free airport experiences. This rule, implemented by various aviation security agencies globally, governs the permitted quantities and types of liquids, aerosols, and gels (LAGs) passengers can carry in their carry-on luggage.

The core of the 1-3-1 rule is straightforward: passengers are allowed one, quart-sized, clear plastic, zip-top bag for containing all liquids, aerosols, and gels. This bag is specifically designed to facilitate quick and efficient screening procedures. Importantly, each individual container within this designated bag must hold a maximum of 3.4 ounces (100 milliliters).

This restriction applies not only to traditional liquids like water and juice but also to items like lotions, perfumes, hairspray, toothpaste, and even some medications. The crucial purpose behind the 1-3-1 rule is twofold: to prevent the potential smuggling of prohibited items, and importantly, to streamline security checkpoints. By standardizing the quantity and containment of liquids, security personnel can more effectively and swiftly scan carry-on luggage, minimizing delays for passengers.

Understanding and adhering to the 1-3-1 rule is key to a smoother air travel experience. Pre-planning and proper packing are crucial for ensuring compliance. Familiarizing yourself with the specific rules and guidelines of the airline you are flying with, or the security agency at your departure airport, is always recommended to avoid potential issues and delays.