Do you need your credit card to check-in at airport?
Do I need to present the credit/debit card I've used for purchase at check-in? No, you don't need to present your credit or debit card at check-in.
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If you don't check in, you won't receive a boarding pass that allows you to board the plane, and your seat might be given up to a standby passenger. The check-in process also confirms your traveler details like your passport information and frequent flyer number.
However, if a passenger does not have an internet-capable device, it is usually possible to check in at a special machine in the airport. A big advantage of checking-in in advance is that you can choose your seat. Whether this reservation is associated with additional costs depends on the airline.
Although it might not be strictly necessary to carry a credit card when traveling, you might want to do so for several reasons. Many rewards cards waive foreign transaction fees and provide better exchange rates on purchases you make abroad.
Depending on the requirements of airport authorities, you will need to present a mobile boarding pass, a paper boarding pass printed out by you or a paper boarding pass picked up from the check-in desk.
One disadvantage is certainly that many people have poor time management and arrive too late at the airport if they check in online. For some, this can lead to unwanted time pressure. On the other hand, those who still have to check in at the airport itself usually arrive early enough and are therefore over-punctual.
You can fly with any amount of cash. No law prohibits you from bringing any amount of money on a flight. Likewise, TSA has no rules that limit how much money you can bring through security.
There's no limit. Transport as much money as needed to the United States on an airplane. However, if you're planning on bringing $10,000.00 or more, (see “What Qualifies as Money?”), then you must report to the U.S. Customs and Border Protection upon arrival in the United States.
You need to declare it when traveling internationallyYou have the right to travel with as much money as you want. However, during international travel, you need to report currency and monetary instruments in excess of $10,000.
The major disadvantage of using a debit card instead of a credit card is that if it is compromised or stolen, the money in your bank account could be in danger. If you don't have a backup credit card, your entire trip could be distorted while you wait for everything to be resolved and your finances to become available.