What Goes in Checked Bags vs. Carry-On

Checked luggage has different rules than carry-on bags because TSA screeners can inspect it thoroughly before it goes into the cargo hold. This means you can pack items in checked bags that are forbidden in the cabin — most liquids, sharp objects, and tools. The trade-off is that you cannot access your checked bag during the flight, so anything you need mid-journey (medications, valuables, electronics) should go in your carry-on instead.

The basic rule: if an item is not a safety hazard and does not fall into a prohibited category, it can go in checked luggage. This includes everyday clothes, shoes, toiletries in containers larger than 3.4 ounces, and most household items. Checked bags are also where you pack heavier items — TSA does not restrict weight by item type, only by total bag weight (usually 50 pounds for domestic flights, though airlines vary).

Key Takeaways

  • Liquids, gels, and pastes larger than 3.4 ounces are allowed in checked bags but forbidden in carry-on, so pack full-size shampoo, lotion, and sunscreen in your checked luggage.
  • Sharp objects like knives, razors, and scissors must go in checked bags with blade guards or covers; they cannot go in carry-on at all.
  • Lighters, matches, and most flammable items are prohibited in both checked and carry-on bags — check your airline's specific rules before packing.
  • Batteries, power banks, and electronics with lithium batteries have restrictions that vary by type and quantity; remove them from devices or pack them separately.
  • Firearms, ammunition, and explosives require advance notice to your airline and must be unloaded, locked, and declared at check-in.

Liquids, Gels, and Pastes in Checked Bags

Any liquid, gel, or paste larger than 3.4 ounces can go in your checked bag without restriction. This includes shampoo, conditioner, lotion, sunscreen, toothpaste, peanut butter, jam, yogurt, and cosmetics like foundation or lip gloss. Pack these in your checked luggage, not your carry-on, to avoid the 3.4-ounce limit that applies to cabin bags.

Alcohol is allowed in checked bags if it is between 24 and 70 percent alcohol by volume (ABV) — that covers most wine, beer, and spirits. Pack it in the middle of your bag surrounded by soft items like clothes to prevent breakage. Some airlines charge a fee for alcohol in checked bags, so check your airline's policy before packing.

One exception: you cannot pack paint, paint thinner, or other hazardous chemicals in either checked or carry-on bags. If you are unsure whether a substance counts as hazardous, check the product label or ask TSA before you go to the airport.

Sharp Objects and Tools

Knives, razors, scissors, and box cutters must go in checked luggage with blade guards or covers. A butter knife or dull table knife is fine, but anything with a sharp edge needs protection. Wrap the blade in cardboard, use a blade guard, or place it in a sheath before packing.

Tools like hammers, screwdrivers, wrenches, and saws are allowed in checked bags. Drills and power tools are also permitted. The rule is straightforward: if it is a tool and it fits in your bag, it goes in checked luggage, not carry-on. Do not pack tools in your carry-on under any circumstances.

Sporting equipment with sharp edges — ice skates, ski poles, fishing hooks — can go in checked bags. Skis and snowboards are typically allowed but may count as a second checked bag or incur an extra fee depending on your airline.

Batteries and Electronics

Lithium batteries are restricted because they can overheat and catch fire. The rules depend on the type and where the battery is located. Batteries installed in devices (like your phone or laptop) are allowed in both checked and carry-on bags. Spare lithium batteries — including power banks and replacement batteries for cameras or e-readers — are forbidden in checked bags but allowed in carry-on in limited quantities.

If you are packing a laptop, camera, or other electronics with a built-in battery, it can go in your checked bag. But if you have extra batteries sitting loose, those must go in your carry-on. Most travelers pack electronics in carry-on anyway because checked bags get jostled and can be damaged.

Alkaline batteries (the standard AA, AAA, C, D, and 9-volt batteries) have no restrictions and can go in either checked or carry-on bags. If you are unsure whether a battery is lithium or alkaline, check the label or ask at the airport.

Prohibited Items That Cannot Go Anywhere

Some items are banned from both checked and carry-on bags. Lighters and lighter fluid are prohibited entirely — you cannot bring them on a plane in any form. Matches are also forbidden, with one exception: a single box of safety matches (the kind that only light on the box) can go in carry-on, but not checked luggage.

Flammable liquids like gasoline, paint thinner, and certain cleaning products cannot go in either bag. Explosives, fireworks, and ammunition are prohibited (with the exception of ammunition in checked bags if declared in advance and packed according to airline rules — see the section below).

Sporting equipment that uses compressed gas — like scuba tanks or paintball canisters — cannot be packed. Corrosive substances like bleach or drain cleaner are also forbidden. When in doubt, check the TSA website or call your airline before you pack.

Firearms and Ammunition

Firearms can go in checked bags only, and only if you notify your airline in advance and follow specific packing rules. The gun must be unloaded, locked in a hard-sided container, and declared at check-in. You cannot pack it yourself and hand it to the agent — you must declare it before checking your bag, and the agent will direct you to a specific screening process.

Ammunition can be packed in checked bags if it is in its original manufacturer's box or a find container designed for ammunition. Loose rounds are not allowed. Like firearms, ammunition must be declared at check-in. Some airlines prohibit ammunition entirely, so contact your airline before you travel.

These rules explore to domestic flights. International flights have stricter rules that vary by country, so research your destination's laws before packing any firearms or ammunition.

Everyday Items That Are Safe to Pack

Most of what you normally travel with is fine in checked bags: clothes, shoes, belts, hats, and accessories. Books, e-readers, and printed documents are allowed. Toiletries like deodorant, perfume, and cologne go in checked bags (not carry-on if they exceed 3.4 ounces). Hair dryers, curling irons, and straighteners are allowed in checked bags — just make sure they are cool and unplugged before packing.

Food is generally allowed in checked bags. Solid foods like bread, fruit, cheese, and chocolate are fine. Peanut butter, jam, honey, and other spreads are allowed because they are gels. Liquids like soup or sauce are treated as liquids and follow the same rules. Pack food in the middle of your bag to prevent it from leaking onto your clothes.

Gifts are allowed in checked bags, but TSA may open and inspect them. If you are worried about a gift being damaged or opened, wait to wrap it until you arrive at your destination.

Frequently Asked Questions

Can I pack a curling iron or hair straightener in my checked bag?

Yes, as long as it is unplugged and completely cool before you pack it. Hair styling tools are allowed in checked luggage. If you want to use it during your trip, pack it in your carry-on instead — it is also allowed there.

What happens if I accidentally pack a prohibited item?

TSA will find it during screening. If it is in your checked bag, the item will be removed and you will be notified. If it is in your carry-on, you will be asked to remove it, throw it away, or mail it to yourself before boarding. Intentionally packing prohibited items can result in fines.

Can I pack my laptop in checked luggage?

Technically yes, but it is not recommended. Checked bags are handled roughly, and laptops can be damaged. Pack your laptop in your carry-on where you can protect it. The same goes for cameras, phones, and other valuable electronics.

Are there limits on how much cologne or perfume I can pack?

No limit in checked bags — pack full-size bottles if you want. In carry-on, each container must be 3.4 ounces or smaller, and all liquids combined cannot exceed one quart-sized bag.

Can I pack a power bank in my checked bag?

No. Spare lithium batteries and power banks must go in your carry-on bag only. Batteries installed in devices like phones or laptops can go in checked bags, but loose power banks cannot.