Aeromexico
Allowed dimensions: 55x40x25 cm
The context in a few words
In the broader airline landscape, Aeromexico plays the reference-carrier role: a wide fleet, alliance memberships, and a carry-on policy built around passengers who travel between continents.
At 55x40x25 cm, the grid lines up with prevailing IATA references. Most off-the-shelf carry-on cases are compatible out of the box.
One useful benchmark: on Aeromexico, cabin baggage typically fits the overhead bin of an Airbus A320 or Boeing 737, the most common types on their network. The 55x40x25 cm format matches standard bin dimensions, no more. Even seemingly compatible extended cases are best avoided.
Gate staff are typically less zealous than on low-costs, but the published grid still applies. Travelling planning ahead saves a place in the gate-check queue — "free" hold luggage that costs time on arrival.
The personal item — handbag, sleeve, underseat bag — makes all the difference on long flights. On Aeromexico, used well, it frees the cabin case for essentials and keeps liquids, electronics and papers within reach during the flight.
Business class gets extended weight and dimensions — 15 kg on the most generous tier. Not to be confused with a courtesy upgrade: it's a contractual allowance.
Which bag for Aeromexico?
On Aeromexico, the cabin allowance leaves a bit of breathing room — but only if you start from a properly sized case. The picks below cover the formats that work cleanly with the published grid (55x40x25 cm).