NO — Not Allowed in Carry-on Bags on United Airlines
Multi-tools that contain knives, saws, or scissors with blades longer than 4 inches are strictly prohibited in carry-on bags. They must be packed in checked bags.
Can you bring multi-tool (with knife) on United Airlines?
Quick Answer
No — Multi-tool (with knife) is NOT allowed in carry-on bags on United Airlines. Multi-tools that contain knives, saws, or scissors with blades longer than 4 inches are strictly prohibited in carry-on bags. They must be packed in checked bags. Pack it in your checked hold baggage instead.
Also known as: leatherman, swiss army knife, pocket tool
What is multi-tool (with knife)?
Multi-tool (with knife) is a common item that passengers frequently pack when traveling. Often referred to as leatherman, swiss army knife, pocket tool, it is classified under the Tools category by aviation security authorities. When preparing for a trip, understanding exactly what this item is and how it functions can help you determine the best way to pack it in compliance with Transportation Security Administration (TSA) regulations. Generally, guidelines for traveling with multi-tool (with knife) in your luggage. Making sure you properly identify the item before arriving at the airport checkpoint ensures a smoother screening process.
Prohibited In Cabin
Multi-tools that contain knives, saws, or scissors with blades longer than 4 inches are strictly prohibited in carry-on bags. They must be packed in checked bags.
Allowed In Hold
Multi-tools that contain knives, saws, or scissors with blades longer than 4 inches are strictly prohibited in carry-on bags. They must be packed in checked bags.
Airline & Country Specific Baggage Checker
Select your airline or destination to verify tailored limits for Multi-tool (with knife).
United Airlines Carriage & Security Policy
49 CFR § 1540.111 — IATA & Aviation Standards
Carriage of multi-tool (with knife) is governed by TSA security directives under 49 CFR § 1540.111 regarding passenger screening and baggage security. Security rules distinguish sharply between accessible passenger cabin space (where items that could serve as weapons or hazards are prohibited) and cargo hold baggage (where items are safely stowed during flight).
Security Checkpoint Screening Procedure
Security officers evaluate multi-tool (with knife) under strict hazard criteria. Items with sharp edges, heavy weight, or weaponized potential will trigger an automatic secondary bag inspection. If multi-tool (with knife) is prohibited in carry-on bags, attempting to pass through the checkpoint with it will lead to mandatory confiscation. Ensure tools under 7 inches, sports equipment, or camping gear are clearly accessible in your bag if permitted, or securely wrapped inside checked luggage.
Step-by-Step Packing Guide for United Airlines Passengers
Verify that multi-tool (with knife) does not contain uninstalled lithium batteries or prohibited HAZMAT elements before placing in hold luggage.
Wrap multi-tool (with knife) in bubble wrap, soft apparel, or a cushioned travel case to protect against rough mechanical baggage sorting systems.
Pack the item deep in the center of your hardshell or soft checked suitcase away from outer zippers.
Lock your suitcase using a TSA-approved combination lock so inspectors can re-seal your bag if selected for random audit.
Confirm your checked bag weight stays under your airline's maximum limit (usually 50 lbs / 23 kg) at ticket check-in.
Frequently Asked Questions
Verified Travel Information
This document has been rigorously reviewed and verified by our travel reference editors. All statuses, notes, and guidelines are checked against live security feeds from the TSA (Transportation Security Administration), FAA (Federal Aviation Administration), and CBP (Customs and Border Protection).