Different airlines have different restrictions on the weight and size of hand luggage.
A carry-on bag must be small enough to fit in the overhead luggage bin or under the seat in front of you.
A flight case can be used to carry a laptop and travel documents but nothing any bigger.
All of the above answers describe a small bag or case that you would not check-in with your main luggage/suitcase but carry with you on to an aircraft.
"Carry-on Bag"
"Duffel Bag"
"Boston Bag"
These are synonyms for "carry-on baggage" which you can take on the plane. Your carry-on bag should only weigh seven kilograms or less, therefore only a certain weight is allowed on the plane and does not need to be checked in. "Carry-on bags" is accompanied onboard an airplane cabin by passengers and which fits in the space provided above the seats.
The words 'luggage' and 'baggage' mean the same thing here, so you can use either word. The luggage we take on the flight can be called either 'carry on' or 'hand' luggage. Again, both of these words are OK. I personally use the term 'hand luggage'. It is the easiest one to say! The luggage we do not take on the plane with us is called 'checked luggage'. Hope this helps!
The most common way to say it is :
Carry-on luggage
hand luggage
Carry-on luggage and hand luggage is a bag that you can take with you on the plane.
Example :
My hand luggage is this backpack.
This is my carry-on luggage.
最も一般的な言葉は、
Carry-on luggage
hand luggage
です。
Carry-on luggage と hand luggageは、飛行機に持ち込むことのできる荷物を指します。
例：
My hand luggage is this backpack.
手荷物は、このバックパックです。
This is my carry-on luggage.
これは、私の手荷物です。
Hand or cabin luggage is anything you may take with you in the cabin of the aircraft. "My hand luggage consists of a small backpack and a plastic bag of duty free souvenirs."
hand/cabin luggageは、航空機の客室に自分で持ち込むことが可能な荷物のことです。
例：
My hand luggage consists of a small backpack and a plastic bag of duty free souvenirs.
私の手荷物は、小さなリュックサックと、免税店のお土産が入ったビニール袋です。
The most commonly used expression is " carry-on baggage " although we often use "handbag" as well as " satchel" .The meanings are more or less the same and the terms are dependent on the airline.There are more synonyms such as :
-valise
-overnight bag
-"dispatch-case " is also acceptable in instances where you are only carrying documents or papers,
There are types of baggage that can be carried on to the plane. They must meet size requirements as every airline is different. They can also come in different forms such as a handbag, duffel bag or even satchel. The general term for this baggage is carry-on.
アメリカ合衆国 
イギリス 
南アフリカ 
