What goes in checked bags versus carry-on

Checked luggage has looser rules than carry-on because the bag sits in a locked cargo hold where you cannot reach it during flight. The TSA allows items in checked bags that would be confiscated from a carry-on — including most liquids, sharp objects, and tools. The trade-off is that checked bags can be lost, delayed, or damaged, so you should not pack irreplaceable items, medications you need during the flight, or electronics you cannot afford to replace.

The basic rule: if it is not a weapon, an explosive, or a hazardous material that cannot fly at all, it probably goes in checked luggage. Carry-on has the real restrictions because those bags stay with you and could theoretically be used as weapons. Checked bags are screened by X-ray and sometimes opened by hand, but the TSA is not looking to confiscate your belongings — they are looking for things that endanger the aircraft.

Key Takeaways

  • Liquids, gels, and pastes in containers larger than 3.4 ounces are allowed in checked bags, unlike carry-on where they are banned entirely.
  • Sharp objects like knives, razors, and scissors go in checked luggage only — they cannot come through security in a carry-on bag.
  • Tools including hammers, saws, drills, and wrenches are permitted in checked bags but prohibited in carry-on.
  • Certain items like lighters, aerosols, and some batteries are banned from checked luggage entirely and cannot fly at all.
  • Medications, phone chargers, and anything you need during the flight should stay in your carry-on because checked bags may not arrive with you.

Liquids, gels, and creams with no size limit

Checked luggage allows full-size bottles of shampoo, conditioner, lotion, toothpaste, and other liquids and gels. You can pack a 16-ounce bottle of sunscreen, a full tube of toothpaste, or a quart of liquid foundation — none of these are restricted in checked bags the way they are in carry-on. The TSA's 3.4-ounce liquid rule applies only to bags you bring through the security checkpoint and onto the plane.

Pack liquids and gels in a leak-proof container or a plastic bag in case they spill during baggage handling. Checked bags are tossed, stacked, and sometimes pressurized, so a bottle of shampoo can crack. Wrap breakable bottles in clothing or use a packing cube to cushion them. If a bottle does leak, the damage is contained to your checked bag, not your carry-on or the cabin.

Sharp objects and tools

Knives of any size, razors, box cutters, scissors, and other sharp implements belong in checked luggage. A chef's knife, a pocket knife, or a multi-tool with a blade all go in your checked bag. The TSA prohibits these in carry-on because they could theoretically be used as weapons in the cabin, but in a locked cargo hold they pose no risk to the flight.

Tools including hammers, saws, drills, wrenches, screwdrivers, and pliers are allowed in checked bags. If you are traveling with work tools or moving to a new place, pack them in your checked luggage. Axes, hatchets, and ice picks are also permitted in checked bags. The rule is straightforward: if it is a tool or a sharp object that is not a weapon designed for combat, it goes in checked luggage, not carry-on.

Items banned from all luggage

Some things cannot fly in any bag, checked or carry-on. Lighters and lighter fluid are prohibited entirely — you cannot bring a disposable lighter or a refillable lighter on a plane. Fireworks, flares, and other explosives are banned. Aerosol cans with flammable contents (like spray paint or certain insecticides) cannot be packed. Certain types of batteries, including lithium batteries in excess of the allowed quantity, are restricted or banned.

Corrosive chemicals, bleach, and strong acids cannot be packed in checked luggage. Ammunition and firearms have strict rules — firearms must be unloaded, declared to the airline, and packed in a locked hard-sided container in checked luggage only. Check with your airline before packing anything you are unsure about, because rules vary slightly between carriers and some items require advance notice.

Electronics and batteries

Laptops, tablets, cameras, and other electronics can go in checked luggage, but they are safer in carry-on because checked bags are handled roughly and may be exposed to extreme temperatures or pressure changes. If you do pack electronics in checked luggage, wrap them in soft clothing and place them in the center of your bag, surrounded by cushioning material.

Lithium batteries — the rechargeable kind in phones, laptops, and power banks — have limits. You can pack two spare lithium batteries in checked luggage if they are under 100 watt-hours each, which covers most phone and camera batteries. Larger batteries or more than two spares require airline approval. Alkaline batteries (the kind you buy in packs for remote controls) have no restrictions in checked bags.

Medications and personal care items

Prescription medications in their original labeled containers can go in checked luggage, but it is smarter to keep them in your carry-on in case your checked bag is delayed. Over-the-counter medications like pain relievers, cold medicine, and allergy pills are unrestricted in checked bags. Inhalers, EpiPens, and other emergency medications should always travel in your carry-on where you can access them when ready.

Deodorant, makeup, nail clippers, and other personal care items are allowed in checked luggage. Nail files, tweezers, and small scissors (under 7 inches) are permitted. Larger scissors and razors go in checked bags. If you wear glasses or contacts, pack a spare pair in your carry-on in case your checked bag is lost.

Clothing, shoes, and everyday items

Clothes, shoes, belts, and accessories have no restrictions in checked luggage. Books, documents, souvenirs, and gifts are allowed. You can pack a hairdryer, curling iron, or straightener in checked luggage — these are not restricted by the TSA, though some airlines may have their own rules about heat-generating devices. Check your airline's website if you are unsure.

Sports equipment like tennis rackets, golf clubs, skis, and snowboards can be packed in checked luggage, though some airlines charge a fee for oversized or heavy sporting goods. Bicycles must be packed in a bike bag or hard case and may incur an additional charge. Musical instruments are typically allowed but should be packed carefully to prevent damage.

What not to pack in checked luggage

Do not pack anything you cannot afford to lose. Checked bags are occasionally lost, delayed for days, or damaged during handling. Passports, travel documents, money, jewelry, and electronics you need during your trip belong in your carry-on. Medications you take daily should travel with you, not in the cargo hold.

Do not pack perishable food items that will spoil during travel, even though solid foods are allowed. Frozen items will thaw during a long flight. Anything fragile or irreplaceable — family heirlooms, important documents, or sentimental items — should not go in checked luggage. If you cannot replace it or live without it for the duration of your trip, keep it with you.

Frequently Asked Questions

Can I pack a lighter in checked luggage?

No. Lighters and lighter fluid are banned from all luggage, checked and carry-on. This includes disposable lighters, refillable lighters, and lighter fluid. If you smoke, you will need to purchase cigarettes or a lighter at your destination.

What if my checked bag is lost?

The airline is liable for lost checked baggage up to a certain amount (usually around $3,000 for domestic flights, though this varies). File a claim with the airline when ready. This is another reason to keep valuables, medications, and documents in your carry-on — if your checked bag does not arrive, you still have what you need.

Can I pack a power bank or portable charger?

Power banks with lithium batteries can go in checked luggage if they are under 100 watt-hours, which covers most phone chargers. However, it is safer to pack them in carry-on so you can charge your phone during layovers. Check your power bank's watt-hour rating on the label.

Are there restrictions on how much liquid I can pack?

Checked luggage has no TSA limit on the total amount of liquid you can pack. You can fill your entire bag with shampoo bottles if you want. However, your airline may have weight limits for checked bags (usually 50 pounds), so very heavy liquids might push you over the limit.

Can I pack a knife or multi-tool in checked luggage?

Yes. Any knife, including pocket knives and multi-tools with blades, goes in checked luggage only. Pack it in a sheath or wrapped securely so it does not puncture your bag or injure baggage handlers. Do not pack it in carry-on under any circumstances.