TSA Precheck is a government-run program that allows passengers to go through airport security quickly and easily. In recent years, the program has become increasingly popular as it provides travelers with a more efficient and secure way to travel. But one common question that many people have is: how long does TSA Precheck last? In this blog post, we’ll take a look at the answer to this question, as well as the other important things you need to know about the program.