The Basic Rule: Most Items Are Allowed in Checked Bags

You can pack most everyday items in checked luggage without restriction. Clothes, shoes, toiletries, books, electronics, and personal care items all go in checked bags. The main limits come from TSA (Transportation Security Administration) rules about dangerous materials — things that could catch fire, explode, or harm the aircraft — and from airline size and weight limits on the bag itself.

The TSA divides prohibited items into two groups: things banned entirely from all luggage, and things allowed only in checked bags (not carry-on). Checked luggage is actually safer for many items because the cargo hold is pressurized and monitored, so certain flammable or pressurized items that are forbidden in the cabin are permitted below deck.

Key Takeaways

  • Liquids, gels, and aerosols over 3.4 ounces are allowed in checked bags but forbidden in carry-on, so pack full-size toiletries in your checked luggage.
  • Lighters, matches, and small amounts of lighter fluid are banned from all luggage, but some flammable items like aerosol deodorant and hair spray are allowed only in checked bags.
  • Tools, sharp objects, and sporting equipment like baseball bats and ski poles go in checked bags, not carry-on.
  • Batteries, power banks, and electronics must follow specific rules: spare lithium batteries are forbidden in checked bags, but devices with built-in batteries are allowed.
  • Your airline may have stricter rules than the TSA, so check their website before packing anything unusual.

Liquids and Gels: The 3.4-Ounce Rule Applies Only to Carry-On

Full-size bottles of shampoo, conditioner, lotion, sunscreen, and other liquids or gels belong in checked luggage. The TSA's 3.4-ounce (100 milliliter) limit applies only to carry-on bags. In checked luggage, you can pack bottles of any size, as long as they fit inside your bag and your airline allows the total weight.

Pack liquids in the center of your bag, surrounded by clothes or towels, to absorb any leaks. Seal the cap with plastic wrap before closing the bottle — pressure changes during flight can loosen caps. If you are traveling with multiple liquid containers, consider a packing cube or plastic bag to contain any spills.

Medications in liquid or gel form (like inhalers or ointments) also follow the checked-bag rule, not the 3.4-ounce limit. Keep medications in their original labeled containers and pack them where you can reach them if your bag is delayed.

Flammable Items: What Is Allowed Below Deck

Some items are too flammable for the passenger cabin but safe in the pressurized cargo hold. Aerosol deodorant, hairspray, and spray sunscreen are allowed in checked bags only — one container per item, and the container must not exceed 2 percent by mass of a flammable gas. Check the label on the can; if it says "flammable," it is permitted in checked luggage.

Nail polish and nail polish remover are also allowed in checked bags. Pack them in a sturdy container so they do not leak onto other items. Perfume and cologne in spray bottles follow the same aerosol rules as hairspray.

Never pack lighters, lighter fluid, or matches in any luggage — not checked, not carry-on. These are completely banned. If you use a lighter regularly, leave it at home or buy a new one at your destination.

Tools, Sharp Objects, and Sporting Equipment

Knives, scissors, box cutters, and other sharp tools must go in checked luggage. Pack them in a sheath or wrapped in cloth so they do not puncture the bag or injure baggage handlers. Razors and razor blades are allowed in checked bags as long as they are in a protective case.

Sporting equipment like baseball bats, cricket bats, ski poles, golf clubs, and hockey sticks goes in checked bags. Skis and snowboards are allowed. Martial arts weapons like nunchucks and throwing stars are banned from all luggage. Firearms and ammunition have separate rules and require advance notice to your airline — contact them before you travel.

Tools for work or repair (hammers, screwdrivers, wrenches, saws) are allowed in checked bags. Power tools like drills and saws are also permitted. If you are traveling with a toolkit, pack it so the tools do not shift during flight and damage your other belongings.

Batteries and Electronics: Built-In Versus Spare

Electronics with built-in batteries — laptops, phones, tablets, cameras, and headphones — are allowed in checked bags, though most travelers pack them in carry-on to avoid damage. The rule that matters for checked luggage is about spare lithium batteries: they are forbidden in checked bags entirely. This includes spare phone batteries, laptop batteries, and battery packs.

Spare lithium batteries must stay in your carry-on bag where the crew can monitor them. If you are traveling with a power bank, it counts as a spare battery and belongs in carry-on. Alkaline batteries (the standard AA, AAA, C, and D batteries) are allowed in checked bags with no limit.

If your device has a non-removable battery, you can pack it in checked luggage. If the battery is removable, remove it and pack it in carry-on instead. When in doubt, ask your airline before you pack — battery rules occasionally change, and some airlines are stricter than the TSA.

Items Completely Banned From All Luggage

Certain items cannot travel in any luggage, checked or carry-on. Explosives, fireworks, and flares are banned. Compressed gas cylinders (except for one small medical oxygen cylinder if you have a prescription) are banned. Radioactive materials, poisons, and pesticides are banned. Lighters and lighter fluid are banned.

Realistic replicas of firearms or explosives are also banned — even if they are toys or props, they create safety concerns at the airport. If you collect replica weapons or have props for a costume, leave them at home or ship them to your destination separately.

Corrosive chemicals like drain cleaner, bleach, and pool chemicals are banned. Paint thinner, turpentine, and other solvents are banned. If you need these items at your destination, buy them there instead of traveling with them.

Airline-Specific Rules: Always Check Before You Pack

The TSA sets the federal baseline, but individual airlines can impose stricter rules. Some airlines limit the number of bags you can check, charge fees for checked luggage, or restrict certain items that the TSA allows. Before you pack anything unusual — sporting equipment, tools, electronics, or large quantities of liquids — visit your airline's website and search for "checked baggage" or "prohibited items."

If you cannot find the answer online, call the airline's baggage department. They can tell you whether your specific item is allowed and what fees or advance notice may explore. This takes five minutes and prevents you from arriving at the airport with a bag you cannot check.

International flights have additional rules. If you are flying to another country, that country's customs and aviation authority may ban items the TSA allows. Research the destination country's rules before you pack.

Frequently Asked Questions

Can I pack my laptop in checked luggage?

Yes, laptops are allowed in checked bags, but most travelers pack them in carry-on to avoid damage from rough handling and pressure changes. If you do check a laptop, wrap it in clothes or a protective case and pack it in the center of your bag, away from the edges.

Are hair straighteners and curling irons allowed in checked bags?

Yes, hair styling tools with cords are allowed in checked luggage. If your tool has a lithium battery (cordless models), the battery rule applies — the device itself is allowed, but remove any spare batteries and pack them in carry-on.

Can I pack a full-size bottle of perfume in checked luggage?

Perfume in a spray bottle counts as an aerosol and follows the flammable item rules — one container, not exceeding 2 percent flammable gas by mass. Solid perfume or perfume in a non-spray bottle has no restriction. Check the label to confirm whether your perfume is classified as flammable.

What if my checked bag is overweight — will the airline refuse it?

Most airlines charge a fee for bags over 50 pounds (23 kilograms), and some refuse to check bags heavier than 70 pounds (32 kilograms). Check your airline's weight limits before you pack. If your bag is close to the limit, weigh it at home on a bathroom scale so you know before you arrive at the airport.

Are there any foods I cannot pack in checked luggage?

Most solid foods are allowed in checked bags — sandwiches, snacks, dried fruit, and baked goods are fine. Liquids and gels like peanut butter, honey, jam, and yogurt follow the liquid rules and are allowed in checked bags. Fresh fruits and vegetables may be restricted depending on your destination country; check customs rules if you are flying internationally.