Traveling by air involves strict security protocols that shape what you can bring on board. Understanding the items banned on airplanes helps you avoid delays, confiscations, and unnecessary stress at the airport.
This guide outlines the most relevant restrictions for carry-on and checked baggage, focusing on real-world enforcement and practical alternatives. Use it as a checklist before you head to the airport.
| Category | Carry-on Status | Checked Status | Notes |
|---|---|---|---|
| Firearms and ammunition | Prohibited | Permitted only if unloaded and locked in a hard-sided container | Declare to security; airline may require additional documentation |
| Explosives and fireworks | Prohibited | Prohibited | Includes sparklers, toy cannons, and small fireworks |
| Flammable liquids and gases | Prohibited | Limited quantities allowed | Lighter fuel, gasoline, and propane are controlled; check airline policy |
| Sharp objects | Restricted in carry-on | Generally permitted | Box cutters and knives with blades longer than 6 cm usually banned in carry-on |
| Corrosive substances | Prohibited | Prohibited | Includes strong acids, bases, and paint stripper |
Carry-on Baggage Restrictions
Carry-on rules focus on safety and speed at security checkpoints. Liquids, gels, and aerosols must follow the 100 ml rule and fit in a single transparent bag.
Sharp items, tools, and sports equipment are often prohibited in the cabin because they can be used as weapons. Always check your airline’s specific list before packing.
Checked Baggage Rules
Checked bags allow more flexibility, but hazardous materials remain tightly controlled to protect passengers and cargo crews.
You are generally prohibited from transporting lithium batteries loose, and you must declare any dangerous goods such as magnets or medical isotopes. Review your airline’s policy for exact weight and packaging requirements.
Liquids, Gels, and Aerosols Policy
The liquids policy applies to drinks, sauces, creams, pastes, and similar items in your carry-on. Each container must hold 100 ml or less, and all containers must fit inside a single resealable transparent bag.
Medicines, baby food, and special dietary items are allowed in larger quantities, but you must present them for inspection. Duty-free liquids purchased internationally are permitted only if they remain in a secure, tamper-evident bag.
Smart Packing for Air Travel
- Review the official airline and airport security list before packing.
- Use clear, resealable bags for liquids and gels to speed up screening.
- Keep batteries in carry-on and protect terminals with tape or cases.
- Declare any medical items or special equipment at the checkpoint.
- When in doubt, check with your airline or security authority before traveling.
FAQ
Reader questions
Are lithium batteries allowed in checked baggage?
Lithium metal and lithium ion batteries are prohibited in checked baggage and must be carried in carry-on luggage only, stored in a protected manner to prevent damage and short circuits.
Can I bring a pocket knife on board in my carry-on?
Pocket knives with blades longer than 6 centimeters are usually not allowed in carry-on baggage and must be packed in checked luggage, provided they are not prohibited by your airline.
Are travel-sized perfume bottles allowed in my carry-on?
Travel-sized perfume bottles must be 100 ml or less per container and placed in a single quart-sized clear plastic bag, with one bag per passenger, to be accepted in carry-on baggage.
Do cordless power tools count as hazardous items?
Yes, cordless power tools with lithium-ion batteries may be transported in checked baggage only if the battery is removed and carried in carry-on, or installed in the tool and approved by the airline.