Liquids, gels or aerosols in containers 100 ml / 100 g (3.4 oz.) or less. These containers MUST be placed in one (1) clear, closed and re-sealable plastic bag no larger than 1 litre (1 quart). ONE BAG PER PERSON.

Air Canada follows the standard CATSA (Canadian Air Transport Security Authority) regulations, which remain quite strict in 2026. For carry-on luggage, all liquids, aerosols, and gels must be in containers of 100ml (3.4 oz) or less. These containers must fit into a single, clear, resealable plastic bag that has a capacity of no more than 1 liter. Only one bag is allowed per passenger. At security checkpoints, you are still required to remove this bag from your luggage and place it in a bin for separate scanning. There are critical exceptions for baby formula, breast milk, and prescription medications, which are allowed in larger quantities but must be declared to the screening officer. While some European airports are beginning to phase out these rules with advanced CT scanners in 2026, most Canadian airports—and therefore Air Canada flights—still enforce the "100ml rule" with total precision to maintain high security standards.