In contrast to international flights, when you must.

How much money can you bring on a plane. What you need to know. It depends on the countries you are going to exit and enter with a large amount of money in cash. You may bring large sums of money with you in the form of cash, money order, or traveler’s checks.

There are rules about bringing money into or out of some countries but, in the us at least, no rules about bringing money on a plane. Unlike flying internationally, when you must declare. Can you take $10000 on a plane?

While your first checked bag will cost you $30 it becomes increasingly expensive as you add more bags. Although there's technically no legal limit on how much money you can carry on a plane, if you're traveling internationally you must declare amounts. If you’re on a domestic flight within the u.s., there's no limit to the amount of cash (or monetary instruments) you can carry.

Upon entering china you must declare any cash in excess of the equivalent of usd$5,000, or 20,000 yuan, but you can bring in an unlimited amount. To sum up, you can bring any amount of cash on domestic flights. The usa has no restrictions on the amount of cash you can bring on domestic flights.

And members of a family residing in one household entering the united states that submit. Transport as much money as needed to the united states on an airplane. The customs declaration in japan, let’s say, has to be filled up individually.

So if you have $6,000 in cash and a $5,000 traveler’s check, you are above the limit. For domestic flights within the united states, there is no limit to the amount of cash you can carry. Internationally if you want to bring more than $10k to the us you will have to declare it at the customs even.