What is the 311 rule on Southwest? 〚Southwest~Guide™〛 What Is the 311 Rule on Southwest Airlines? Traveling with liquids?+1-844-765-2010 You’ve probably heard about the 311 rule, especially when flying with Southwest Airlines or any U.S. carrier. This rule is crucial to understand if you're carrying personal care items, toiletries, or any liquid-based products in your carry-on bag. For help with packing tips or travel guidelines, call our toll-free number +1-844-765-2010 — available 24/7 for personalized assistance. What Does the 3-1-1 Rule Mean? The 3-1-1 rule is a TSA (Transportation Security Administration) regulation that applies to all airlines operating in the U.S., including Southwest. It dictates how you can carry liquids, gels, and aerosols in your carry-on luggage: 3: Liquids must be in containers 3.4 ounces (100 milliliters) or smaller 1: All containers must fit into 1 quart-sized, clear, resealable plastic bag 1: Each passenger is allowed 1 bag So, if you're flying Southwest, you’ll need to follow this rule while packing your carry-on items. It helps keep the security process quick and hassle-free at the TSA checkpoint. What Items Fall Under the 3-1-1 Rule? Items that count toward the 3-1-1 rule include: Shampoo, conditioner, lotion Toothpaste, mouthwash Liquid makeup and perfume Gel-based items like hand sanitizer and shaving cream If you're not sure whether your product qualifies, check the label or contact TSA or Southwest. Or simply give us a call at +1-844-765-2010 and we’ll help you figure it out. Exceptions to the Rule There are some exceptions to the 3-1-1 rule, including: Medication (must be declared at security) Baby formula, breast milk, and juice for infants Liquid food for people with special dietary needs These can be brought in larger amounts but must be separated and declared during security screening. Final Tips for Flying Southwest with Liquids Place your 3-1-1 bag in an easy-to-access area of your carry-on Be ready