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If you are flying with Air Canada there is one carry-on rule that makes or breaks your airport experience: the 3-1-1 rule for liquids. Overlook it, and you may be forced to sacrifice costly toiletries, confront lengthy delays at security or put your flight at risk. Get it right, and you’ll sail through screening with no anxiety.
Millions of passengers each year unknowingly break this rule — and not because it’s confusing, but rather because it is commonly misunderstood. From traveling abroad on vacation to taking a cruise, this exclusive guide covers all you need to know — and what most travelers don't.
The 3-1-1 rule limits how liquids, gels, and aerosols can be carried in cabin baggage.
3 — Each container must be 3.4 oz (100 mL) or less
1 — All containers must fit in one clear quart-size (≈1 liter) bag
1 — Only one bag allowed per passenger
This applies to:
✔ All Air Canada flights worldwide
✔ Domestic and international routes
✔ Economy, Premium Economy, Business, and First Class
✔ Adults, teens, and children (each person gets one bag)
Important: The restriction is enforced at airport security — not by the airline — but you must comply to board your flight.
The liquid restriction exists to reduce potential security risks onboard aircraft. Limiting container size and requiring visibility allows screening officers to inspect items quickly and accurately.
Because security standards are largely harmonized worldwide, Air Canada passengers encounter nearly identical liquid rules across most airports.
Travelers often assume only drinks are restricted. In fact, the aviation departments categorize a lot of the common things we use on a daily basis as liquids, gels or aerosols.
Water, soda, juice, coffee, tea
Alcohol and spirits
Smoothies and protein shakes
Shampoo and conditioner
Liquid soap and body wash
Toothpaste
Mouthwash
Contact lens solution
Perfume and cologne
Liquid foundation and skincare
Hair gel or styling cream
Face moisturizer
Lip gloss
Shaving gel
Sunscreen lotion
Ointments
Hairspray
Spray deodorant
Shaving foam
Spray sunscreen
Body spray
Plenty of food is taken away at screening as travelers don't realize they come under the category of liquids:
Yogurt or pudding
Peanut butter or chocolate spread
Honey or syrup
Jam or jelly
Soft cheese
Salsa or dips
Soups and sauces
Rule of thumb: If it can be poured, squeezed, spread, or sprayed, it likely falls under the restriction.
Following the rule properly is simple — but must be done precisely.
Each container must be 100 mL (3.4 oz) or smaller. Large bottles are not allowed, even if partially empty.
Use a transparent, resealable plastic bag with a capacity of about one liter (quart size).
Typical dimensions:
Around 6 × 9 inches (15 × 23 cm)
Each passenger may carry only one liquids bag. Families cannot combine items.
Place the bag in a screening bin separately from your carry-on.
Pro tip: Pack this bag at the top of your carry-on for quick access.
Note: Still unsure if your carry-on items meet the liquid and baggage rules for your upcoming flight with Air Canada?
Avoid delays, confiscated items, or last-minute stress at the airport by getting expert guidance before departure.
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Security officers will not bend the rules — even for expensive items.
Possible consequences include:
❌ Confiscation and disposal
❌ Delays that could affect boarding
❌ Secondary screening
❌ Last-minute baggage check fees
❌ Stress and frustration before your flight
Luxury perfumes, cosmetics, and duty-free items are some of the most frequently thrown away products globally.
Once you pass screening, restrictions no longer apply to items purchased inside the secure area.
You may carry onto the aircraft:
✔ Bottled water or drinks bought at the airport
✔ Duty-free liquids
✔ Coffee or beverages from terminal shops
✔ Alcohol purchased after screening
Smart traveler tip: Take an empty reusable bottle with you and after security, fill it up instead of paying the airport prices.
Some essential liquids are allowed in larger quantities but must be declared.
Passengers traveling with babies can carry reasonable amounts of:
Baby formula
Breast milk
Baby food
Juice or water for the child
Allowed items may include:
Prescription medications
Liquid medical supplies
Nutritional supplements
Contact lens solution
These items may undergo additional screening, so keep them accessible and labeled.
The 3-1-1 rule applies only to carry-on bags.
In checked luggage, you can pack larger quantities of liquids, including:
✔ Full-size toiletries
✔ Cosmetic products
✔ Beverages and food items
✔ Liquid souvenirs
However, hazardous or flammable substances remain prohibited.
Passengers with connecting flights are advised to be very careful.
On international flights, you might even have to clear security again. If you take along any liquids that you purchased in the beginning of your journey and they exceed the limits or are not properly sealed, they may be confiscated.
To avoid issues:
✔ Place large liquids in checked baggage
✔ Keep duty-free items sealed
✔ Check rules at connecting airports
✔ Allow extra time for re-screening
Experienced travelers sometimes completely skip liquid restrictions by going over to solid products.
Shampoo and conditioner bars
Bar soap instead of body wash
Solid deodorant (stick, not gel)
Toothpaste tablets
Powder cosmetics
Sunscreen sticks
These items don’t count toward liquid limits and free up valuable carry-on space.
Even seasoned travelers get caught off guard. Avoid these frequent errors:
✘ Packing full-size toiletries in carry-on
✘ Using opaque or oversized bags
✘ Bringing multiple liquid bags
✘ Forgetting to empty reusable bottles
✘ Carrying liquid souvenirs onboard
✘ Assuming premium tickets allow exceptions
Preparation at home prevents problems at the airport.
No. The 3-1-1 rule applies equally to all passengers, including those in Business Class or holding elite status.
Security regulations do not vary based on ticket price, loyalty tier, or boarding group.
Use this final check to avoid surprises:
✔ All containers are 100 mL (3.4 oz) or smaller
✔ Everything fits inside one clear quart-size bag
✔ Only one bag per traveler
✔ Larger liquids packed in checked baggage
✔ Medical or baby items separated for declaration
✔ Reusable bottle emptied before screening
Yes. The carry-on liquids limits apply to all passengers of Air Canada traveling on domestic and international flights. Airport security officials apply the rule before boarding.
Yes — you can bring a number of small containers, as long as each is 100 mL (3.4 oz) or less and all the containers fit into one clear, resealable one-liter bag. Excess liquids must be removed during security screening before your Air Canada flight if items do not fit into the bag.
Yes. Toothpaste is a gel, which counts as liquid on Air Canada flights in carry-on baggage. It must fit in a 100 mL or smaller container and go into your clear liquids bag.
It will not be permitted through security. Restrictions are based on the container’s maximum capacity, not the amount inside. Larger containers may be confiscated even if they are only partially full.
Yes. When flying with Air Canada, it permits essential liquids like baby formula, breast milk and medically required items in larger quantities. They do have to be declared at security, and may be subject to additional screening.
Liquids purchased in the airport after clearing security screening are generally permitted in your carry-on. If you’re going to be catching connecting flights that require additional screening, the items may have to stay sealed in approved packaging, with proof of purchase.
No. The 3-1-1 liquid rule applies equally to all Air Canada passengers, regardless of cabin class, ticket type, or frequent-flyer status.
Yes. Empty bottles are permitted in carry-on bags on Air Canada flights. You can refill them after passing through the security checkpoint.
The 3-1-1 rule might sound complicated, but once you get it, it’s pretty simple. This is a simple rule to follow for passengers traveling with Air Canada, to have the best start to their journey.
A few minutes of thoughtful packing can save you from confiscated belongings, lengthy delays and unnecessary panic — so that you can think about what really matters: making the most of your trip.
Try to choose solid alternatives, pack light or put larger liquids in checked baggage, whenever in doubt. Well-prepared travelers can make airport security just a formality rather than an obstacle.