Travelers often dread going through TSA security lines, but by signing up for TSA PreCheck, you can save a lot of time and hassle at airport security.

Exactly how much time can you save? We'll put it this way: In March 2023, 89% of TSA PreCheck passengers waited less than five minutes at airport security.

Travelers with TSA PreCheck can use dedicated security lines, keep their shoes on and leave their 3-1-1 liquids and laptops in their bags. These benefits are available when flying on dozens of airlines at over 200 airports.

Here, we answer your questions: What is TSA PreCheck, how much does it cost and how can you get it for free?

What is TSA PreCheck?

TSA PreCheck is a membership program that offers dedicated airport security lines and streamlined screening at a few hundred airports across the U.S.

Upon approval, members receive a Known Traveler Number that lets the airlines know that you are eligible for TSA PreCheck benefits.

More than 80 airlines participate in TSA PreCheck to provide a smoother airport screening process. Simply add your Known Traveler Number to your flight reservations to receive a "TSA PreCheck" designation on your boarding pass and use the dedicated security lines. On some flights you may not receive TSA PreCheck benefits based on the airline you're flying, which airport you are flying from or TSA procedures.

Children up to 12 years old do not need their own TSA PreCheck membership. As long as they are traveling with an adult who is a member, they can use the TSA Security lanes too. Children ages 13-17 can travel with TSA PreCheck member parents so long as the TSA PreCheck indicator appears on the child's boarding pass as well.

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Differences between TSA PreCheck and Global Entry

While TSA PreCheck and Global Entry are both designed to streamline security checkpoints, each is targeted to a specific type of travel.

TSA PreCheck makes domestic travel simpler, offering dedicated airport security lanes, lower application fees and several locations where you can enroll.

Global Entry, on the other hand, is best for international travelers. This program includes TSA PreCheck benefits, but also simplifies the U.S. customs process when returning from outside the U.S.

This chart highlights some of the similarities and differences between TSA PreCheck and Global Entry.

TSA PreCheck requirements

The TSA PreCheck program is only open to U.S. citizens, U.S. nationals and lawful permanent residents.

Travelers interested in TSA PreCheck must apply online for pre-approval. Once your interview is booked, you are required to bring an unexpired U.S. government-issued photo identification, plus proof of citizenship. Accepted documents include your passport or a driver's license and birth certificate.

Immigrants can learn more about required documentation on the Homeland Security website.

How much does TSA PreCheck cost?

The benefits sound great, but what is the fee for TSA PreCheck? TSA PreCheck costs $78 for a five-year membership period. After the initial application fee, PreCheck renewal only costs $70 if completed online. As detailed below, some travel credit cards will help offset this cost.