Luggage Rules You Should Know Before Packing Your Bag
The most widely cited international rule for liquids in carry-on luggage is known as 3-1-1: containers of no more than 100 ml each, inside a single clear bag of no more than 1 liter per passenger. Exceeding that limit almost always means the item will be confiscated at the security checkpoint.
Each airline sets its own weight and size limits for carry-on and checked luggage, so the same bag could be accepted by one airline and rejected by another. Typical ranges are between 7 and 10 kg for carry-on luggage, and 20 to 23 kg per checked bag in economy class.
Besides liquids, there are items prohibited or restricted for security reasons (batteries, sharp objects, flammables) that you should check before packing to avoid wasting time or having items seized at the airport.
The 3-1-1 Rule for Liquids
Each liquid, gel, or aerosol must go in a container of no more than 100 ml, all inside a single resealable clear bag of up to 1 liter. This bag must be presented separately at the security checkpoint. Liquids purchased after the checkpoint (duty-free) usually have different rules for connecting flights.
Carry-On Luggage vs. Checked Luggage
Carry-on luggage is what you bring with you in the cabin, with stricter weight and size limits, and where valuables and essential medications should go. Checked luggage is transported in the cargo hold and usually allows more weight, but takes longer to retrieve and carries a higher risk of mishandling.
Most Common Prohibited or Restricted Items
- Loose lithium batteries and power banks: generally only allowed in carry-on luggage, never in checked luggage.
- Sharp or pointed objects (knives, large scissors): must go in checked luggage, not in the cabin.
- Flammable liquids, non-cosmetic aerosols, and certain chemical products: prohibited in both types of luggage.
- Firearms or replicas: require special procedures and are almost never allowed without prior authorization.
Practical Tips Before Traveling
Always check your airline's specific policy (weight, dimensions, and overweight fees), tag your bag with contact information, and carry documents, medications, and valuables you don't want to risk in checked luggage in your carry-on.
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Approximate Luggage Ranges in Economy Class (confirm with your airline)
| Luggage Type | Approximate Weight | Main Restriction |
|---|---|---|
| Carry-on (cabin) | 7-10 kg | Liquids maximum 100 ml per container |
| Checked (hold) | 20-23 kg per bag | Sharp objects and loose batteries prohibited |
| Personal item (additional bag) | Varies, usually goes under the seat | Must fit under the seat in front |
Frequently Asked Questions
Can I Carry a Power Bank in Checked Luggage?
No, generally loose lithium batteries and power banks are only allowed in carry-on luggage due to fire risk.
What Happens If My Liquid Exceeds 100 ml?
It will most likely be confiscated at the security checkpoint, except for exceptions such as prescription medications or baby food.
Is the Allowed Luggage Weight the Same for All Airlines?
No, each airline sets its own weight and size limit, so you should check it before traveling to avoid overweight fees.
Can I Carry Liquid Medications Exceeding 100 ml?
Yes, they're usually allowed in reasonable quantities for the trip if you present a prescription or medical justification, but you must declare them at the checkpoint.
