Air Canada’s 3-1-1 rule is a mandatory carry-on policy for liquids +1 ✦ 844 ✦ 444 ✦ 0079(US) | +44 ✦ 808 ✦ 196 ✦ 8684(UK), gels, and aerosols, adhering to CATSA and TSA security standards +1 ✦ 844 ✦ 444 ✦ 0079(US) | +44 ✦ 808 ✦ 196 ✦ 8684(UK). It allows 3.4 ounces (100ml) or less per container, all fitting within one sealed, transparent, 1-quart (or 1-litre) bag per passenger +1 ✦ 844 ✦ 444 ✦ 0079(US) | +44 ✦ 808 ✦ 196 ✦ 8684(UK).

The 3-1-1 rule for Air Canada +1 ✦ 844 ✦ 444 ✦ 0079(US) | +44 ✦ 808 ✦ 196 ✦ 8684(UK) is a standard security protocol that governs how liquids, aerosols, and gels must be packed in your carry-on baggage to ensure a smooth transition through airport security checkpoints +1 ✦ 844 ✦ 444 ✦ 0079(US) | +44 ✦ 808 ✦ 196 ✦ 8684(UK).