Prohibited Items That Will Be Confiscated at Security
The TSA (Transportation Security Administration) maintains a list of items banned entirely from both checked and carry-on luggage. These are things you cannot bring on a plane at all, regardless of how you pack them. Explosives, flammables, and certain chemicals fall into this category because they pose a safety risk to the aircraft and everyone aboard.
Common prohibited items include fireworks, lighter fluid, paint thinner, aerosol cans with flammable contents, and ammunition. Realistic replica firearms, even toy guns that look like real weapons, are also banned. If you pack any of these, security will confiscate them and you will not get them back. You will not be charged a fee, but you will lose the item.
Corrosive substances like drain cleaner, pool chemicals, and strong acids cannot go in checked bags either. The same applies to poisons and pesticides. If you are unsure whether something is prohibited, check the TSA website's "What Can I Bring?" tool before you pack—it lets you search by item name and tells you the rules for both checked and carry-on bags.
Key Takeaways
- Explosives, flammables, and corrosive chemicals are banned from checked luggage entirely and will be confiscated at security.
- Lithium batteries and electronics with large batteries must follow specific packing rules or cannot fly at all, depending on the device.
- Medications in checked bags should be in their original labeled containers with your name on them to avoid delays or confiscation.
- Valuable items like jewelry, cash, and electronics are safer in your carry-on bag because checked luggage can be lost or delayed.
- Perishable foods and items that require refrigeration will spoil during the flight and should not be packed in checked bags.
Batteries and Electronics With Restricted Power Sources
Lithium batteries are the biggest electronics-related restriction for checked luggage. Spare lithium batteries—the kind in phone chargers, laptop power banks, and camera batteries—cannot go in checked bags at all. They must travel in your carry-on bag where crew can monitor them if a problem develops. This includes loose batteries and batteries installed in small devices like e-readers or wireless headphones.
Larger devices with built-in lithium batteries, like laptops and tablets, can go in checked luggage, but only one per bag. If you are checking a laptop, remove it from your bag during security screening just as you would in carry-on. Some airlines have additional restrictions on certain electronics, so check your airline's website before you pack.
Hoverboards, e-scooters, and self-balancing devices are banned from checked luggage entirely because their large lithium batteries pose a fire risk. Vaping devices and spare vape batteries also cannot be checked—they must stay in your carry-on or be left at home.
Medications and Prescription Items
Prescription medications can go in checked luggage, but there are important steps to follow. Keep medications in their original labeled containers with your name on the label. If a TSA officer opens your bag, they need to see that the medication belongs to you and matches your name on your ID. Loose pills or medications in unmarked bottles will raise questions and can cause delays.
Liquid medications like insulin or inhalers follow the same 3.4-ounce liquid rule as other liquids in carry-on bags, but checked bags have no liquid limit. Still, pack them in a way that prevents leaks—place them in a sealed plastic bag inside your luggage. If you are traveling internationally, bring a copy of your prescription or a letter from your doctor explaining why you need the medication, especially for controlled substances.
Over-the-counter medications in their original packaging are fine to check. However, if you need medication during your flight, keep a supply in your carry-on instead of relying on what is in your checked bag.
Valuables and Items You Cannot Replace Quickly
Cash, jewelry, important documents, and electronics should never go in checked luggage. Checked bags are handled by multiple people, loaded and unloaded by machinery, and occasionally lost or delayed. If your bag goes missing, you may not see it for days or weeks—and if it is truly lost, the airline's compensation is limited. Irreplaceable items like family heirlooms, passports, and original documents belong in your carry-on where you control them.
Expensive cameras, watches, and laptops are also safer in carry-on bags. If you must check a valuable item, photograph it before you pack and keep the photo on your phone as proof of condition. Some travelers use travel insurance that covers checked baggage, but the payout is usually less than the item's actual value.
Credit cards, debit cards, and travel documents like your passport should always stay with you. If your checked bag is delayed, you do not want to be stranded without ID or a way to access money.
Perishable Foods and Items That Spoil
Fresh foods, dairy products, and anything that requires refrigeration will spoil in a checked bag. The cargo hold is not temperature-controlled, and even if it were, your bag will sit on the tarmac and in baggage claim areas where it gets warm. Cheese, yogurt, meat, seafood, and prepared foods will go bad during a flight longer than a few hours.
Solid foods that do not require refrigeration—like bread, cookies, chocolate, and peanut butter—are fine to pack. Fruits and vegetables are allowed, though they may get bruised. If you are bringing food through international borders, check the destination country's rules first; many countries ban fresh produce, dairy, and meat entirely.
Alcohol is allowed in checked luggage in most cases, but it must be in its original sealed container and you are limited to one liter per passenger on most airlines. Pack it in the center of your bag surrounded by soft items to prevent breakage, or wrap the bottle in a plastic bag in case it leaks.
Sporting Equipment and Gear With Restrictions
Most sporting equipment is fine in checked luggage—skis, snowboards, golf clubs, and tennis rackets all travel well when properly packed. However, some items have specific rules. Scuba tanks and diving equipment cannot be checked because they may contain pressurized gas. Firearms and ammunition have strict rules that vary by airline and destination; contact your airline well before your trip if you plan to travel with a gun.
Certain types of sports gear with pressurized containers—like some camping stoves or propane canisters—are banned. Matches and lighters are also prohibited in checked bags, even if they are in a lighter case. If you use a lighter regularly, buy a new one at your destination rather than packing one.
Martial arts weapons like nunchucks, brass knuckles, and throwing stars are banned from checked luggage on many airlines. Check your specific airline's policy if you travel with specialized equipment.
Liquids, Gels, and Aerosols Beyond the Carry-On Limit
While checked bags have no liquid limit, certain liquids are still banned entirely. Flammable liquids like gasoline, lighter fluid, and paint thinner cannot be checked. The same applies to strong cleaning products, pesticides, and corrosive substances. These are safety hazards in the cargo hold and will be confiscated.
Regular toiletries and cosmetics—shampoo, conditioner, lotion, toothpaste, and makeup—can go in checked bags in any quantity. This is actually the best place for full-size bottles since carry-on bags have the 3.4-ounce limit. Pack them in a sealed plastic bag to prevent leaks that could damage your clothes.
Perfume and cologne are allowed in checked bags as long as they are in their original containers. Nail polish and nail polish remover are flammable and cannot be checked, so leave these at home or buy them at your destination.
Items That Are Legal but Risky to Check
Some items are technically allowed in checked luggage but are risky because of how baggage is handled. Fragile items like wine glasses, dishes, and decorative objects can break during loading and unloading. If you must pack fragile items, wrap them individually in bubble wrap or clothing, and place them in the center of your bag surrounded by soft items.
Electronics that are not batteries—like headphones, chargers, and small appliances—are allowed but vulnerable to theft and damage. If an item is expensive or irreplaceable, keep it in your carry-on. The same applies to eyeglasses and hearing aids; if you lose them during your trip, you have no backup.
Plants and seeds are restricted depending on your destination. Domestic flights within the United States allow most plants, but international travel has strict rules. Check with the USDA or your destination country's agriculture department before packing any plants.
Frequently Asked Questions
Can I pack a power bank in my checked bag?
No. Power banks contain lithium batteries and must go in your carry-on bag only. This applies to all spare batteries and battery-powered chargers. Larger devices like laptops with built-in batteries can be checked, but power banks cannot.
What happens if I accidentally pack a prohibited item?
TSA will find it during baggage screening and confiscate it. You will not be charged, but you will lose the item. If you realize before you check your bag, remove it and either leave it at home or pack it in your carry-on if it is allowed there.
Can I pack my prescription medications in a pill organizer instead of the original bottle?
It is safer to keep them in the original labeled container. If TSA or customs opens your bag, they need to verify the medication matches your name and prescription. A pill organizer raises questions and can cause delays. If you use an organizer, also pack the original bottles.
Is it okay to pack a lighter in my checked bag if it is empty?
No. Even empty lighters are banned from checked luggage. The residual fuel inside can ignite. Leave lighters at home or buy one at your destination.
Can I check a suitcase with a built-in USB charger?
Yes, as long as the battery inside is not a lithium battery or is very small. Check your suitcase's manual or contact the manufacturer to confirm the battery type. If it has a removable lithium battery, remove it and pack it in your carry-on instead.