Items the TSA and airlines prohibit in checked luggage

The TSA (Transportation Security Administration) and individual airlines maintain separate lists of what cannot go in your checked bag. Some items are banned entirely from all luggage. Others are allowed in carry-on but forbidden below deck because checked baggage is not monitored during flight. A few items are allowed in checked bags but not in the cabin — the opposite of what most people assume.

The core rule: anything flammable, explosive, or that could disable an aircraft is prohibited in checked luggage. This includes common household items you might not think twice about packing. The restrictions exist because checked baggage is loaded into the cargo hold, where a fire or chemical reaction cannot be when ready addressed by crew.

Key Takeaways

  • Lighters, aerosols, and anything flammable are banned from checked bags entirely, even if they are allowed in carry-on.
  • Lithium batteries (including those in phones and laptops) are restricted in checked bags; most must travel in your carry-on instead.
  • Certain tools, weapons, and sporting equipment are prohibited in checked luggage but permitted in carry-on, which is the reverse of common assumptions.
  • Medications, toiletries, and food are generally allowed in checked bags in quantities larger than carry-on limits permit.
  • Your airline may have stricter rules than the TSA, so checking your carrier's website before packing prevents last-minute surprises at the airport.

Flammable liquids and gases that cannot be checked

Lighters and lighter fluid are completely prohibited in checked baggage. This includes disposable lighters, refillable lighters, and lighter fluid in any quantity. Even a single lighter in your checked bag will result in the bag being refused or removed from the aircraft.

Aerosol cans are banned from checked luggage, with rare exceptions. This covers spray deodorant, hairspray, spray sunscreen, insect repellent, and spray paint. The pressurized containers can rupture in the cargo hold due to pressure and temperature changes. A few aerosols — like certain medical inhalers — are permitted, but standard consumer aerosols are not.

Gasoline, paint thinner, acetone, and similar solvents cannot be packed in checked bags. Neither can nail polish or nail polish remover. Alcohol above 140 proof (70% ABV) is also prohibited in checked luggage; lower-proof alcohol is allowed in limited quantities on some airlines.

Lithium batteries and electronic devices with restrictions

Lithium batteries are the single most common item that trips up travelers. Spare lithium batteries — whether loose or in devices — are prohibited in checked luggage on passenger aircraft. This includes batteries for cameras, e-readers, power banks, and laptops. They must travel in your carry-on bag where crew can monitor them.

Your phone, laptop, and tablet can go in checked luggage because the battery is installed and the device is less likely to be damaged or short-circuit. However, TSA recommends keeping these devices in carry-on to prevent theft and damage. If you do check them, power them down completely.

Spare batteries for electronic cigarettes and vaping devices are also prohibited in checked bags. The devices themselves are allowed in carry-on only, not checked.

Weapons, tools, and sporting equipment you cannot check

This category confuses many travelers because the rules seem backward: some items are allowed in checked bags but not in carry-on, while others are the opposite.

Firearms and ammunition are prohibited in carry-on but allowed in checked luggage if you follow specific procedures. You must declare them to the airline at check-in, pack them unloaded in a locked hard-sided container, and place that container inside your checked bag. Ammunition must be in its original manufacturer's box or a similar container designed for ammunition.

Knives, box cutters, and razor blades are prohibited in carry-on but allowed in checked bags if packed safely. A kitchen knife can be checked; a pocket knife cannot be carried on board.

Tools longer than 7 inches — including wrenches, hammers, screwdrivers, and saws — are prohibited in carry-on but allowed in checked luggage. Tools shorter than 7 inches are generally allowed in both.

Sporting equipment rules vary by item. Baseball bats, golf clubs, and ski poles are prohibited in carry-on but allowed checked. Cricket bats, lacrosse sticks, and hockey sticks follow the same rule. Martial arts equipment like nunchucks and throwing stars are prohibited in both carry-on and checked luggage.

Medications, toiletries, and food in checked bags

Unlike carry-on luggage, checked bags have no liquid restrictions for personal use items. You can pack full-size bottles of shampoo, conditioner, lotion, and other toiletries in checked luggage without the 3.4-ounce limit that applies to carry-on.

Medications in solid form (pills, tablets, capsules) are allowed in checked bags in reasonable quantities for personal use. Liquid or gel medications should be in their original labeled containers. If you are traveling internationally, carry prescriptions and a doctor's letter in your carry-on instead, as checked bags can be delayed or lost.

Food is generally allowed in checked bags. Solid foods like snacks, chocolate, and baked goods are fine. Liquids and gels — peanut butter, honey, jam, yogurt, cream cheese — follow the same rules as other liquids and are allowed in checked bags but not carry-on in quantities over 3.4 ounces.

Hazardous materials and chemicals

Bleach, drain cleaner, and oven cleaner are prohibited in checked luggage. So are pesticides, fertilizers, and pool chemicals. These items are classified as hazardous materials and create a fire or toxic gas risk in the cargo hold.

Perfume and cologne above 70% alcohol content are prohibited. Standard perfume (typically 15–40% alcohol) is allowed in checked bags in reasonable quantities, usually up to 1 liter per person on most airlines.

Dry ice is prohibited in checked luggage. It is allowed in carry-on in limited quantities (2.5 kg or 5.5 pounds per passenger) if the package is vented, but most travelers should not attempt to bring it.

Thermometers and barometers containing mercury are prohibited in both checked and carry-on luggage. Digital versions are fine.

How to verify your airline's specific rules

The TSA website (tsa.gov) has a searchable database called "What Can I Bring?" where you can look up specific items. However, individual airlines — United, American, Delta, Southwest, and others — sometimes have stricter rules than the TSA allows.

Before packing, visit your airline's website and search for "checked baggage prohibited items" or "baggage restrictions." Some airlines prohibit items the TSA permits. For example, some carriers have additional restrictions on certain sporting goods or electronics. Calling the airline's baggage desk directly is the fastest way to confirm if you are unsure about a specific item.

If you are traveling internationally, the rules of your destination country and any connecting countries also explore. International flights have additional restrictions that domestic flights do not.

Frequently Asked Questions

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

No. Even an empty lighter is prohibited in checked luggage. The TSA and airlines ban all lighters regardless of fuel content because the mechanism itself poses a risk. Leave lighters at home or purchase them at your destination.

What happens if I accidentally pack a prohibited item in my checked bag?

If discovered during screening, your bag will be removed from the aircraft and you will be notified. You may be asked to remove the item, or your entire flight may be delayed while the bag is inspected. In some cases, you may face fines. Always check your bag before heading to the airport.

Are phone chargers and power banks allowed in checked luggage?

Phone chargers without batteries are allowed in checked bags. Power banks (which contain lithium batteries) must go in carry-on luggage only. The battery inside is the restriction, not the charger itself.

Can I pack my laptop in checked luggage?

Yes, but the TSA recommends against it because checked bags are handled roughly and theft is possible. If you do check a laptop, power it down completely and pack it in a protective case. Do not pack spare laptop batteries in checked luggage — they must be in carry-on.

Are scissors allowed in checked bags?

Scissors with blades shorter than 4 inches are allowed in checked luggage. Scissors with longer blades are prohibited. Carry-on rules are stricter — most scissors are not permitted in the cabin at all.