It depends on the sale, but most last for a week or two. Some seasonal sales, like the Black Friday sale, only last for a day.
Others, like the Presidents’ Day sale, last for several days. You can always check the website or ask an employee in store to find out how long a particular sale will last.
In general, you can expect sales at Best Buy to last for a few days to a week. However, it varies depending on the specific sale. If you want to know how long a particular sale will last, you can check the website or ask an employee in store.