What size bag for the cabin?
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The size of the bag allowed in the cabin depends on an essential distinction often causing confusion: the personal item placed under the seat and the carry-on bag stored in the overhead compartment. These two formats do not have the same dimensions nor the same fare status according to airline companies. Understanding this difference helps avoid unexpected fees and boarding denials.
In the majority of cases, only one personal item is included for free, while a classic carry-on bag is subject to specific options or conditions.
Difference between personal item under the seat and carry-on bag
-
Personal item (under the seat)
- Compact format
- Placed under the seat in front of you
- Included for free with most airlines
- Common dimensions: around 40 × 30 × 20 cm (varies by airline)
-
Carry-on bag (overhead compartment)
- Larger format
- Stored in the overhead lockers above the seats
- Often chargeable or included with certain options
- Common dimensions: up to 55 × 40 × 20 cm
- Dimensions always include handles, pockets, and wheels
- A bag that is too large may be refused or placed in the hold for a fee
- The format choice must be made before booking or check-in
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FAQ – How to choose the right carry-on bag size
Can I bring a personal item and a carry-on bag at the same time?
Yes, only if the airline authorizes it via a specific option. Without an option, generally only the personal item is accepted.
Is the personal item checked at boarding?
Yes. Airlines regularly check that the personal item complies with the allowed dimensions and can fit under the seat.
Is the weight of the bag as important as the size?
Size is the priority. Even though weight is rarely checked for carry-on bags, the bag must remain manageable for the passenger.
How can I be sure my bag is accepted?
It is recommended to check the exact dimensions on the airline’s website before departure and to measure the bag when packed, not empty.
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