Airport security can be stressful, and sometimes the cause of delays and frustrations is something as simple as an everyday object. There are 11 everyday objects that make airport security think you're a threat, leading to extra scrutiny, lengthy searches, and unnecessary hold-ups. While these items may seem harmless to most travelers, they can trigger alarms or be flagged by security scanners for various reasons.
From common toiletries to electronic devices, many items found in carry-ons are not as innocent as they appear. Travelers often find themselves surprised by which objects cause alarm, slowing down the process and sometimes even leading to missed flights. Before heading to the airport, it's important to know what items to pack carefully, or perhaps leave at home, to avoid unwanted attention. Here are 11 everyday objects that can raise red flags and cause unnecessary delays at security.
Frozen Water Bottles
While freezing your water bottle can seem like a smart way to keep a drink cold, it can cause holdups at airport security. Even when frozen, it's still treated as a liquid under TSA rules. If it begins to melt, officers may flag it for extra screening or remove it entirely. They might check that it’s completely solid at the time of inspection. To avoid delays, empty your bottle before reaching security and refill it afterward. If you choose to bring it frozen, expect closer inspection, or consider using an empty reusable bottle instead.
Laptops in Checked Luggage
Placing a laptop in checked baggage might seem like a shortcut, but it's discouraged due to safety risks. Laptops contain lithium-ion batteries that can overheat and cause fires. Security may flag bags with electronics for additional screening, which can delay handling. There's also a greater risk of damage, theft, or loss when devices are out of reach. Keeping your laptop in your carry-on allows quick access and better protection. If checking it is unavoidable, use a shock-absorbent case and ensure it’s powered off.
Excessive Amounts of Powdered Substances
Powders like protein supplements, baby formula, and cosmetics can delay screening if brought in large amounts. Quantities over 350 ml (about 12 oz) may require extra testing. To minimize disruption, carry small portions in your hand luggage and pack the rest in checked bags. Keep powders in original, clearly labeled containers to avoid confusion. For international travel, check destination-specific restrictions on powders before departure.
Selfie Sticks
Though useful for taking travel photos, selfie sticks can raise red flags at checkpoints. They are often extendable and metal, which may prompt screening officers to treat them as potential hazards. Some airlines and airports restrict them altogether. If you're unsure whether your stick is allowed, check airline policies in advance. You might be better off packing it in checked baggage or switching to a compact tripod or grip designed for travel.
E-Cigarettes and Vapes in Checked Luggage
Vape pens and e-cigarettes are not allowed in checked bags due to battery risks. The lithium-ion cells they contain can overheat and trigger fires. Most airlines require them to be packed in carry-on luggage, stored securely, and protected from accidental activation. Bringing spare batteries? Keep them in cases, not loose. If placed in checked baggage, devices may be removed or cause delays. Always follow airline rules regarding electronic smoking devices.
Large Containers of Peanut Butter
Due to its thick consistency, peanut butter is classified as a liquid by airport security. Containers larger than 3.4 ounces (100 ml) will be rejected in carry-on luggage. The same applies to other spreads like hummus and soft cheese. If you want to bring peanut butter, pack travel-sized servings or store them in checked bags. Powdered peanut butter or single-serve packets are safer bets for getting through security smoothly.
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Flammable Items in Luggage
Items like aerosol sprays, hairsprays, and some perfumes contain flammable ingredients and are subject to restrictions. They can set off alarms or prompt extra screening. Small, travel-sized aerosol containers are usually allowed in carry-ons, but larger cans must go in checked baggage with proper labeling. Read product labels carefully, and if you're packing matches or lighters, confirm whether they're permitted by your airline.
Power Banks Over a Certain Capacity
Portable chargers with lithium-ion batteries over 100 watt-hours (Wh) are banned from flights due to fire risk. Power banks under this limit must be kept in carry-on bags and not placed in checked luggage. Some airlines permit higher-capacity models with advance approval. Check your charger’s capacity before flying, and store it in a case to prevent accidental short-circuiting. Proper handling reduces the chance of complications at the gate.
Disposable Razors with Exposed Blades
Disposable razors are generally allowed in carry-ons, but those with exposed blades or removable parts may trigger inspection. Safety razors and straight-edge blades must be packed without the blade or placed in checked baggage. Razors with built-in protective casings are usually acceptable. If in doubt, put them in your checked luggage or choose a model with retractable or encased blades to avoid problems.
Multitools and Swiss Army Knives
Multitools and compact knives may seem practical, but most contain blades or sharp components that are banned in carry-ons. Even small versions are subject to confiscation. If you need a multitool during your trip, store it in your checked luggage. Some bladeless models are allowed, but check TSA and airline policies before flying. When uncertain, it’s better to leave sharp tools at home.
Loose Batteries
Spare lithium-ion batteries must be packed with care. Loose cells can short-circuit if they touch keys, coins, or other metal objects. This is why most airlines require you to keep them in your carry-on and store them in a case or original packaging. Avoid placing them in checked luggage. If traveling with multiple batteries, make sure their capacity falls within your airline’s safety limits to avoid additional inspection.
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