Most everyday items are allowed in checked bags, but liquids, sharp objects, and certain electronics have real restrictions
You can pack most of what you own in a checked bag — clothes, shoes, books, toiletries in solid form, and everyday tools. The restrictions exist because checked baggage goes in the cargo hold, where pressure and temperature change, and because baggage handlers and other passengers need to stay safe. The Transportation Security Administration (TSA) maintains a searchable list of what is and is not allowed, and the rules are the same across all U.S. airlines, though individual airlines may add their own limits on weight or size.
The key difference between checked and carry-on luggage is that checked bags do not go through the cabin with you, so some items that are forbidden in carry-on bags are permitted below. Conversely, a few items are banned from checked bags entirely because of fire risk in an unpressurized cargo hold. Knowing which category your items fall into saves you from repacking at the airport or having your bag opened by security.
Key Takeaways
- Liquids and gels in checked bags must be in containers of 3.4 ounces or smaller, packed in a single clear quart-sized bag, just like carry-on rules — but checked bags allow more total liquid volume than carry-on.
- Sharp objects like knives, razors, and tools are allowed in checked bags but must be sheathed or wrapped so they cannot cut baggage handlers.
- Lithium batteries and electronics with lithium batteries are restricted or banned in checked luggage because they pose a fire risk in cargo holds.
- Flammable items like lighters, matches, and aerosol cans are banned from checked bags entirely.
- Checked bags allow heavier and bulkier items than carry-on, so pack your shoes, books, and heavy tools there instead of your personal item.
Liquids, gels, and pastes in checked luggage
Liquids and gels follow the same 3.4-ounce container rule in checked bags as they do in carry-on, but you can pack more total volume. Each individual container must hold 3.4 ounces (100 milliliters) or less, and all of them together must fit in a single clear quart-sized plastic bag. This means you can pack shampoo, conditioner, lotion, toothpaste, jam, peanut butter, and yogurt — anything that flows or spreads — as long as each container is small enough.
The reason for the container size is that if a bottle breaks in the cargo hold, a small amount of liquid is less likely to damage other luggage or create a safety hazard. Pack your liquids bag in the center of your checked suitcase, surrounded by clothes or towels, to cushion it from impact. If you are traveling with a full-size bottle of shampoo or sunscreen, you can pack it in checked luggage only if it is 3.4 ounces or smaller — otherwise, buy a travel size or wait until you arrive.
Sharp objects and tools
Knives, razors, box cutters, and most tools are allowed in checked bags but forbidden in carry-on. This includes kitchen knives, pocket knives, and utility knives. The rule exists because checked bags are not screened the same way as carry-on, and the items are inaccessible during flight. You must sheath or wrap sharp blades so that baggage handlers cannot cut themselves when they touch the bag.
Tools like screwdrivers, hammers, wrenches, and saws are also allowed in checked bags. Firearms and ammunition have their own rules and must be declared to the airline before you arrive at the airport — they cannot be packed without advance notice. If you are traveling with sports equipment like skis or a golf club, pack those in checked luggage as well; they are too long and rigid for carry-on anyway.
Electronics and batteries
Laptops, tablets, cameras, and phones can go in checked bags, but lithium batteries — the rechargeable kind in most modern devices — are restricted. A device with a lithium battery installed, like a laptop or phone, is allowed in checked luggage. However, spare lithium batteries and lithium battery packs cannot go in checked bags at all; they must stay in your carry-on or be left behind. This is because lithium batteries can catch fire in the unpressurized cargo hold if they short-circuit.
Alkaline batteries (the kind you buy in packs for flashlights and remote controls) are allowed in both checked and carry-on bags. If you are packing a device with a removable battery, you can check the device itself, but remove the battery and carry it with you. Chargers and cables have no restrictions and can go anywhere in your luggage.
Flammable and hazardous items that are banned from checked bags
Lighters, matches, and any aerosol can — including deodorant, hairspray, and spray paint — are forbidden in checked luggage. These items are flammable and pose a fire risk in the cargo hold. The same applies to nail polish, nail polish remover, and rubbing alcohol. If you need these items at your destination, buy them after you land or pack them in carry-on if the airline permits (rules vary by airline for carry-on aerosols).
Bleach, pesticides, and other corrosive or toxic chemicals are also banned. If you are moving and need to transport household chemicals, you will have to ship them separately or purchase them at your destination. Fireworks, flares, and any item labeled "flammable" should never be packed in any luggage.
Heavy items and bulky gear
Checked bags are the right place for heavy shoes, books, weights, and sports equipment because they do not count against your carry-on weight limit. Most airlines allow one checked bag of up to 50 pounds at no extra charge (though fees explore for additional bags). This means you can pack your winter boots, textbooks, a dumbbell set, or a bicycle without worrying about overhead bin space or arm fatigue.
If your checked bag exceeds 50 pounds, you will pay an overweight fee — usually $100 or more, depending on the airline. Weigh your bag at home before you leave for the airport. If it is close to the limit, move lighter items to your carry-on or personal item to stay under the threshold.
Items that require special handling or declaration
Firearms, ammunition, and certain sporting goods must be declared to the airline before you check in. Firearms must be unloaded, locked in a hard-sided case, and declared at the ticket counter. Some airlines also require that you sign a declaration form. If you are traveling with a firearm, call your airline at least 24 hours before your flight to confirm their specific rules.
Valuable items like jewelry, electronics, and important documents should not go in checked bags because baggage can be lost or delayed. Keep those in your carry-on or personal item. If you must check something valuable, take a photo of it and keep the receipt in case you need to file a claim.
Frequently Asked Questions
Can I pack a full-size bottle of shampoo in my checked bag?
No, not if it is larger than 3.4 ounces. Each container must be 3.4 ounces or smaller, even in checked luggage. Buy a travel-size bottle or pack solid shampoo bars instead. If you need a full-size bottle at your destination, purchase it after you arrive.
Are scissors allowed in checked luggage?
Yes, scissors with blades shorter than 4 inches are allowed in checked bags. Longer scissors or safety scissors with rounded tips are also permitted. Wrap them in cloth or place them in a sheath so baggage handlers do not cut themselves.
Can I pack my laptop in a checked bag?
Yes, laptops are allowed in checked bags. However, it is safer to keep your laptop in your carry-on because checked bags are handled roughly and can be lost. If you must check it, wrap it in clothes and place it in the center of your suitcase for cushioning.
What happens if I accidentally pack a forbidden item?
TSA may open your bag during screening and remove the item, or you may be notified at baggage claim. If a dangerous item is found, you could face fines or legal consequences. Check the TSA website before packing to avoid this.
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. Spare lithium batteries of any kind are not allowed in checked luggage.