Aeroméxico Carry-On Rules: Size, Weight, and Liquids Policy

Aeroméxico’s carry-on rules are pretty manageable once you separate two things: the bag size they’ll accept in the cabin and the total weight allowance tied to your fare. If you pack within those numbers (and keep your personal item truly under-seat-sized), you’ll avoid most last-minute surprises.

For quick comparisons across airlines, you can reference my airline carry-on luggage rules guide.

Aeroméxico carry-on rules at a glance

• Carry-on size: 55 × 40 × 25 cm (21.5″ × 15.7″ × 10″)
• Personal item size: 45 × 35 × 20 cm
• Pieces allowed: 1 carry-on + 1 personal item
• Weight (Basic fare): Combined carry-on + personal item up to 10 kg
• Weight (Classic and above): Up to 15 kg carry-on baggage allowance (fare-dependent)
• Liquids: Pack to the standard 100 ml / 1-liter clear bag approach (details below)

The personal item should fit under the seat in front of you, and the carry-on bag must be stowed in the overhead bin.

Aeroméxico carry-on size limit

Aeroméxico’s published maximum carry-on size is:

• 55 × 40 × 25 cm (including wheels and handles)

This is the number to plan around. If your bag has a structured front pocket or you like to pack it “rounded out,” measure it fully loaded—those are the two most common reasons a bag that looks fine at home becomes questionable at the airport.

Aeroméxico carry-on weight limit

Aeroméxico’s carry-on weight allowance depends on the fare family you booked.

Basic fare

With Basic, Aeroméxico states your ticket includes 1 carry-on and 1 personal item with a combined weight limit of 10 kg for both items together.

Classic (and other higher fare families)

Aeroméxico describes higher fare families as including a higher carry-on baggage weight allowance (commonly referenced as 15 kg, fare-dependent). If you’re not sure which branded fare you have, check the “What’s included” page for your exact ticket—Aeroméxico’s fare families spell it out.

Practical tip: Even with a higher weight allowance, don’t pack your carry-on like a checked bag. You still need to lift it, maneuver it, and fit it cleanly in the overhead.

Aeroméxico personal item rules (under-seat bag)

Aeroméxico’s published personal item size is:

• 45 × 35 × 20 cm

This is the bag I’d treat as your “essentials bag” (passport, medication, chargers, phone, wallet, anything fragile). Keeping it truly under-seat sized also makes boarding and deplaning a lot easier.

If the bag is too big or too heavy, you’re going to have to pay a fee, so it’s always better to know your bag size and the limitations in advance.

Recommended Carry-On Bag When Flying Aeromexico

The simplest way to reduce sizing surprises abroad is to use a carry-on that’s made for international overhead bins from the start. That’s why I recommend the Travelpro Maxlite 5 International Expandable Carry-On Spinner (19″)—it’s compact, rolls well, and tends to be a safer fit across a wide range of international airlines.

If the airline you’re flying is known for strict sizing or weight checks, keep the bag unexpanded and avoid overstuffing exterior pockets so it stays as slim as it measures.

Why it’s a strong match for Aeroméxico: Aeroméxico’s carry-on size limit is 55 × 40 × 25 cm, and the Maxlite 5 International’s overall footprint is designed around the common international template (with extra breathing room on depth).

Manufacturer dimensions (overall, incl. wheels and carry handles): 21.75″ × 15.75″ × 7.75″

Carry-On Liquids: Aeromexico Liquids Policy

The rules for carry-on liquids are set by the TSA, EASA, and FAA. Aeromexico doesn’t have its own specific Liquids Policy, they just enforce the rules and policies of the Authorities.

• Containers with liquids and gel-like substances may hold up to 100 ml (maximum capacity must be printed on the container).
• All containers must be carried in a plastic bag (transparent, resealable, max. capacity of one liter). One bag per person.
• The bag must be presented separately at security. Take your liquids out of your carry-on baggage at the security screening point and present them separately. In exceptional cases, liquids may be opened during security checks and removed from their outer packaging.
• Liquid duty-free goods purchased at an international airport or on board an aircraft outside the EU must be transported in a tamper-proof, certified bag on connecting flights via an EU airport. The proof of purchase must be inside the bag and the bag must be sealed by the retailer.
• Medicines and special food (e.g., baby food) can be carried outside the plastic bag and must also be presented at security.

Exceptions to this rule are certain medications and baby food/child nourishment.

Aeromexico Carry-On Pet Policy

Aeromexico may not charge for your carry-on bag, but they will charge for your carry-on pet. The price depends upon the route and is charged once per flight direction.

For your cat or dog to travel with you, they must be stowed in a special carrier to be placed under the seat in front of you and shall remain your responsibility throughout the flight. The following requirements are in effect:

• Only cats and dogs are allowed in the cabin.
• The maximum weight allowed for the pet is 9 kg including the carrier or container weight.
• You can only fly with your pet in the cabin on flights with a maximum duration of 6 hours.
• Pets must be at least 8 weeks old.
• Breastfeeding animals and young animals will not be accepted.
• Pets in veterinary treatment will not be accepted.

TSA-Approved Pet Carrier for Aeromexico

I have traveled with 2 dogs over the last 10 years, one was a 20 lb. Shih Tzu-Bichon and another is a 12lb. Chihuahua mix. We used the Sherpa pet carrier when bringing them on a flight with us, and it worked great!

Aeromexico Carry-On Size and Fees

Aeromexico does not charge a fee for carry-on baggage that meets their size requirements. If your bag is too large and doesn’t meet Aeromexico’s carry-on restrictions, you may be charged a fee to gate-check it.