Items the TSA and airlines prohibit in checked bags

The TSA (Transportation Security Administration) and individual airlines maintain separate lists of what cannot go in checked luggage. Some items are banned entirely from all flights. Others are allowed in carry-on bags but forbidden in checked bags because checked luggage sits in an unpressurized cargo hold where fires spread faster and crews cannot respond. A third category — like lighters and certain tools — can go in checked bags but not in the cabin with you.

The distinction matters because packing a prohibited item in checked luggage means it gets confiscated at the airport, delaying your trip and costing you the item. Knowing the actual rules before you pack saves time and money.

Key Takeaways

  • Flammable items like lighters, aerosols, and certain batteries are banned from checked bags because fire in an unpressurized cargo hold cannot be fought by crew.
  • Liquids, gels, and powders over 3.4 ounces are prohibited in checked bags on most U.S. airlines, though some exceptions exist for certain toiletries and food items.
  • Weapons including firearms, ammunition, and realistic replica guns are banned from checked luggage on commercial flights, with no exceptions for unloaded or broken firearms.
  • Certain electronics like power banks, laptops, and hoverboards contain lithium batteries that pose fire risk and are either banned or restricted in checked bags.
  • Your airline's specific rules may differ from TSA rules, so checking your carrier's website before packing prevents confiscation at the airport.

Flammable and pressurized items that cannot fly in checked bags

Lighters, matches, and lighter fluid are completely banned from checked luggage on all commercial flights. Even a single lighter in your suitcase will be removed. This includes electronic lighters, torch lighters, and zippo-style lighters. Matches are also prohibited, with the exception of one small box of safety matches (the kind that only light on the box) — but most airlines do not allow even those, so assume they are banned unless your airline explicitly permits them.

Aerosol cans present a similar risk. Spray deodorant, hairspray, spray sunscreen, and insect repellent are forbidden in checked bags. The pressurized container can rupture in the cargo hold, creating a fire hazard. Shaving cream, whipped cream dispensers, and spray paint fall into the same category. If the label says "aerosol" or "pressurized," it cannot go in checked luggage.

Certain batteries and battery-powered devices are restricted or banned because they can overheat and ignite. Spare lithium batteries (the kind used in phones and laptops) are prohibited in checked bags entirely. Power banks and external phone chargers are also banned from checked luggage on most airlines, though they are allowed in carry-on bags. Hoverboards, e-cigarettes, and vaping devices contain lithium batteries and are banned from both checked and carry-on luggage on most U.S. carriers.

Weapons and realistic replicas banned from all luggage

Firearms, ammunition, and explosives are prohibited in checked bags on commercial flights. This includes handguns, rifles, shotguns, and air rifles. Even an unloaded firearm or one with the firing pin removed is banned. Some airlines allow firearms to be transported if they are declared in advance and packed in a locked, hard-sided container, but this requires calling the airline before you arrive at the airport — do not assume it is permitted.

Realistic replica guns, including airsoft guns, BB guns, and toy guns that look like real weapons, are also banned from checked luggage. The TSA cannot distinguish a replica from a real firearm during screening, so any gun-shaped object is confiscated. Paintball guns are similarly prohibited. Knives, swords, and box cutters cannot go in checked bags either.

Martial arts weapons like nunchucks, brass knuckles, and throwing stars are banned. Certain tools — including crowbars, ice picks, and awls — are also prohibited because they can be used as weapons. If you need tools at your destination, buy them there or ship them separately.

Liquids, gels, and powders over 3.4 ounces

The TSA restricts liquids and gels in carry-on bags to 3.4 ounces per container, but checked bags have different rules. Most airlines allow liquids and gels in checked luggage as long as they are in containers of 18 ounces or less and the total does not exceed 70 ounces per bag. However, some airlines have stricter limits, so check your carrier's website before packing.

Shampoo, conditioner, lotion, sunscreen, and liquid soap are allowed in checked bags within these limits. Perfume and cologne are also permitted. Toothpaste, which is technically a gel, is allowed in checked bags in any quantity, though the TSA recommends keeping it under 3.4 ounces to avoid confusion at security.

Paint, paint thinner, and certain cleaning products are classified as hazardous materials and are banned from checked luggage. Bleach, pesticides, and pool chemicals are also prohibited. If you need these items at your destination, buy them there rather than transporting them.

Electronics and batteries with lithium cells

Laptops, tablets, and cameras can go in checked bags, but spare lithium batteries cannot. If you are traveling with a laptop, keep it in your carry-on bag instead — this protects it from damage and keeps the battery accessible if the airline needs to inspect it. The same applies to phones and other devices with built-in lithium batteries.

Certain electronic devices are banned from checked luggage entirely because they contain non-replaceable lithium batteries. This includes e-cigarettes, vaping devices, and some types of electronic cigarettes. Hoverboards, self-balancing scooters, and certain hover-boards are banned from both checked and carry-on luggage on most U.S. airlines due to repeated fire incidents.

Rechargeable batteries used in power tools, cordless drills, and similar equipment are restricted. Some airlines allow them in checked bags if they are in the device itself, but spare batteries are banned. Call your airline before packing power tools or cordless devices.

Hazardous materials and chemicals

The TSA classifies certain household and personal care items as hazardous materials, which are banned or restricted in checked luggage. Nail polish and nail polish remover are prohibited because they are flammable. Rubbing alcohol and hand sanitizer are also banned from checked bags, though small amounts of hand sanitizer (up to 3.4 ounces) are allowed in carry-on bags.

Dry ice is banned from checked luggage on most airlines. If you need to keep something frozen during travel, use regular ice in a sealed container instead. Certain medications and medical supplies may also be restricted — check with your airline if you are traveling with injectable medications, inhalers, or other medical devices.

Pesticides, fertilizers, and gardening chemicals are prohibited. Ammunition is banned from checked bags on commercial flights. Fireworks, flares, and other pyrotechnic devices are completely prohibited from all luggage.

How to check your airline's specific rules before packing

The TSA website lists prohibited items, but individual airlines enforce additional restrictions. Delta, United, American, Southwest, and other carriers each maintain their own checked baggage policies. Before you pack, visit your airline's website and search for "checked baggage restrictions" or "prohibited items." Most airlines have a downloadable list or a search tool where you can enter an item and see whether it is allowed.

If you cannot find the answer online, call your airline's customer service line. They can tell you whether a specific item is allowed in your checked bag. This takes five minutes and prevents confiscation at the airport. If you are traveling internationally, check both the TSA rules and the rules of the country you are flying to — some countries have stricter prohibitions than the United States.

Pack prohibited items in a separate bag and leave them at home rather than discovering them at the airport. If you accidentally pack something forbidden, the TSA will remove it, but you will not get it back. Some airports have mail services where you can mail prohibited items to yourself, but this is not available at all locations.

Frequently Asked Questions

Can I pack a lighter in my checked bag if it is empty?

No. Even an empty lighter is banned from checked luggage. The TSA prohibits all lighters, including those with no fuel. If you use a lighter regularly, buy a new one at your destination or pack it in your checked bag only after you arrive home.

Are power banks allowed in checked bags?

No. Power banks and external phone chargers are banned from checked luggage on most U.S. airlines because they contain lithium batteries. You can bring them in your carry-on bag. Check your specific airline's website to confirm, as policies vary slightly.

What happens if the TSA finds a prohibited item in my checked bag?

The item is removed and confiscated. You will not be charged a fee or fined in most cases, but you will lose the item. If the prohibited item is a weapon or explosive, you may face additional consequences. The TSA will attempt to contact you after your flight to explain what was removed.

Can I pack a knife in my checked bag if it is in a sheath?

Most airlines allow certain types of knives in checked bags if they are sheathed or securely wrapped. However, pocket knives, box cutters, and multi-tools are typically banned. Check your airline's policy before packing any knife, as rules vary by carrier.

Are medications allowed in checked luggage?

Most common medications are allowed in checked bags. However, certain medications like inhalers, injectable medications, and controlled substances have restrictions. Pack medications in their original labeled containers and keep a copy of your prescription or a doctor's letter if you are traveling with controlled substances or large quantities.