When boarding, most airlines still allow you to take two pieces of luggage with you. American Airlines, Delta Air Lines, Southwest Airlines and most full-service airlines allow two pieces of luggage. These are commonly referred to as "carry-on" and "personal items".
For example, during the flight, American Airlines passengers can carry one piece of hand luggage and one personal item, which must fit under the seat in front of you. These items include wallets, business briefcases, laptop bags or similar items such as handbags.
Therefore, the wallet is not counted as a carry-on, but as a personal item.
You may have purchased a ticket that can take two pieces of luggage with you, but some low-cost airlines do not have a carry-on baggage allowance. They only include allowances for personal item. If your ticket does not include a carry-on baggage allowance, you can only bring one personal item.
If you bring a wallet, it will be everything you carry with you, except for the clothes you wear and small items such as umbrellas. You can no longer bring other trolley luggage or carry on backpack.
When you try to travel with only a wallet, be sure to check with the airline for the maximum size allowed. American Airlines limits the size of personal items to 18 x 14 x 8 inches, which means that bag that is too large will not meet the requirements.
If a typical wallet is used as a personal item, a lot of space will be wasted. Check out the picture below. The pink box is the amount of space allocated for carry-on luggage and personal items (American Airlines). If you want to make full use of the "personal items" space, you can use a larger bag (such as a handbag) to fasten it to the trolley case. Of course, you need to pack the wallet in it.
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