Nobody loves standing in a long TSA line. But those checkpoints exist for a good reason: to keep everyone on the plane safe. And every day, TSA officers find items in carry-on bags that simply should not be there.
Knowing what you cannot bring before you pack makes everything easier. It keeps the line moving, it keeps you out of trouble, and it saves you the headache of having something confiscated at the gate.
Here is a straightforward guide to what you can’t bring in your carry-on.
Flammable and Combustible Items
Anything that could catch fire or explode is a hard no in your carry-on. That includes aerosol sprays, bleach, cooking spray, lighter fluid, butane, spray paint, chlorine, and any alcoholic beverages over 140 proof.
Fireworks, sparklers, hand grenades, torch lighters, and strike-anywhere matches are also banned, and most of these cannot go in checked bags either.
The TSA does allow one standard lighter or a book of safety matches (the kind that only strike on a specific surface) on board.
Liquids Over 3.4 Ounces
The TSA follows the 3-1-1 rule for liquids. Each liquid must be in a container of 3.4 ounces or smaller. All those containers must fit inside one clear, quart-size plastic bag. And each passenger gets just one bag.
Here is where it gets tricky. The TSA treats some items as liquids that you might not expect, things like hair gel, gel-type candles, heating pads, creams, and even peanut butter.
There are exceptions for medically necessary liquids. Baby food, breast milk, baby formula, and liquid medications are allowed in reasonable quantities based on the length of your trip. You will need to declare them at the checkpoint and take them out for inspection.
Household Tools and Cookware
You might not think twice about packing a screwdriver or a cast-iron skillet, but these items are not allowed in your carry-on. The TSA considers many common tools to be potential weapons in the airplane cabin.
The banned list includes:
- Cast-iron cookware
- Screwdrivers longer than 7 inches
- Hammers
- Nail guns
- Drills and drill bits
- Mallets
Sports Equipment
Planning a hiking trip or heading to a sporting event? Leave the gear in your checked bag. The TSA does not allow these items in the cabin:
- Baseball bats and cricket bats
- Canoe paddles and hiking poles
- Lacrosse sticks and hockey sticks
- Bowling pins
- Tent poles and tent stakes
- Animal traps or animal repellent spray
Weapons and Firearms
Knives, swords, saws, brass knuckles, axes, cattle prods, stun guns, and self-defense sprays all belong in your checked bag, not your carry-on. The TSA does allow tweezers, disposable razors, electric razors, scissors, and knitting needles.
Firearms are completely banned from carry-on luggage, whether loaded or unloaded. That includes BB guns and cap guns. Ammunition is banned from carry-ons as well.
If you do travel with a firearm, it must go in your checked baggage, in accordance with TSA specifications, your airline’s rules, and the firearm laws at your destination.
A Few Surprising Items
Here is something that surprises a lot of travelers: most snow globes and Magic 8 Ball toys are not allowed in carry-on bags. Why? They contain more than 3.4 ounces of liquid. The TSA specifically calls out Magic 8 Balls as checked-bag-only items. Snow globes can fly in the cabin only if they hold less than 3.4 ounces of liquid and fit entirely inside your one quart-size plastic bag.
Toy guns, swords, and knives are also generally not allowed in carry-ons. Whether a particular toy weapon is permitted is up to the TSA officer’s judgment, so it is safer to pack them in your checked bag. Realistic replicas of hand grenades or other explosives are banned from both carry-on and checked luggage entirely.
One Last Thing Worth Knowing
Bringing a prohibited item through security is not just an inconvenience. It can result in a significant fine or, in serious cases, criminal charges.
If you are ever unsure about a specific item, the TSA maintains a detailed database of prohibited items on its website and through the MyTSA app. You can also text the word Travel to AskTSA at 275-872 for a quick answer before you pack.
A few minutes of planning before you zip up that bag can save you a lot of grief at the checkpoint.