Carry-On Essentials: What's Allowed Through Airport Security

The golden rule for carry-on luggage is to know your liquids, sharps, and electronics. While most personal items are permitted, specific categories have strict regulations to ensure passenger safety. Always check your airline's specific carry-on size and weight limits, as these vary.

General Carry-On Guidelines

1. Liquids, Gels, and Aerosols (The 3-1-1 Rule): Each item must be 100 ml (3.4 ounces) or less. All items must fit comfortably in one transparent, re-sealable plastic bag (like a Ziploc bag) with a maximum capacity of 1 litre (approximately 1 quart). Only one such bag is allowed per passenger.
2. Electronics: Laptops, tablets, e-readers, cameras, and portable chargers are generally allowed. You will usually need to remove larger electronics (like laptops and tablets) from your bag and place them in a separate bin for X-ray screening.
3. Medication: Prescription and over-the-counter medications are generally allowed in reasonable quantities. Liquid medications exceeding 100 ml are permitted but must be declared to security officers for inspection. It's best to keep prescription medication in its original packaging with the pharmacy label.
4. Food: Solid foods are generally allowed. Liquid or gel-like foods (e.g., yogurt, jam, sauces, creamy cheeses) are subject to the 3-1-1 liquid rule.
5. Sharp Objects: Most sharp objects (knives, razor blades, box cutters, large scissors) are prohibited. Small scissors (blades shorter than 6 cm/2.4 inches) are usually allowed.
6. Tools: Most tools are prohibited in carry-on. Small tools like screwdrivers or wrenches shorter than 17.8 cm (7 inches) may be allowed, but it's safer to pack them in checked luggage.
7. Batteries: Spare lithium-ion batteries (for laptops, cameras, power banks) must be in carry-on luggage, not checked luggage, due to fire risk. They should be protected from short circuiting.

Pro tip: When in doubt, pack it in your checked luggage. If you only have a carry-on and are unsure, check the Canadian Air Transport Security Authority (CATSA) website or your specific airline's guidelines before you fly. A quick check can save you time and hassle at security.