Many travelers in the United States are already benefitting from the right to a faster security screening when flying from US airports thanks to the TSA PreCheck program. Such an advantage is particularly helpful for business travelers and frequent flyers who will save a considerable amount of time in each trip, but only legal US citizens and residents can apply. Also, since its implementation is relatively recent, you should check whether your airport/terminal and airline has adhered to the program, even though you will be granted priority treatment in the case that Precheck fast lanes are not available. Once you have been given approval, your airport waiting times and the typical hassle of travelling will be drastically reduced; go on reading to find out how to get it.

How to become a TSA PreCheck approved traveler
All that frequent flyers from the United States must do is search for the nearest TSA Precheck enrolment center and submit their online application first, then scheduling an appointment for a background check face to face and fingerprinting. A fee will be charged to cover administrative costs.
How will I know if I have been given TSA PreCheck approval?
If you are accepted into the program, you will be notified by mail within 3 weeks after your personal interview. It must be said that the majority of travelers receive the notification much earlier than that and can visit the official site in order to see their status online in the meantime.
What does it mean to be approved?
From the moment you are informed of your approval onwards , a TSA PreCheck indicator will be shown on your boarding pass as well as integrated into its barcode whenever it is issued by participating airlines in eligible airports, meaning that you will be granted access to fast security lanes specifically designated for members of the program, who won’t need to take off their shoes and belts or show their laptops and liquids.
How much does TSA Precheck cost?
Applicants pay an 85 USD fee, which corresponds to 5 years of speeding through airport security without any delays.
Is TSA PreCheck valid when flying out of the US?
If you are flying to an international destination, your TSA Precheck will be valid as long as the airline you bought your plane ticket from is a member too. See a couple of examples below:
-When you fly out of Los Angeles International airport in California, for instance, you will be able to enjoy your TSA Precheck benefits with American Airlines, Delta, Southwest, United, Virgin America and Virgin Atlantic, Jet Blue, Air Canada, Alaska Airlines, Aeromexico, Etihad, Lufthansa, Avianca, Emirates, Boutique Airlines, Turkish Airlines, Singapore Airlines, Copa, Korean Air, Cathay Pacific and All Nippon Airways.
-The advantages of TSA PreCheck will be granted to those travelling from John F. Kennedy International airport in New York with American Airlines, Delta, United, Virgin America, Air Canada, Hawaiian Airlines, Jet Blue and most of the aforementioned foreign companies, to which we must add the Helsinki-based Finnair.
UPDATE: From February 1, 2018 onwards, Air France, Brussels Airlines, KLM Royal Dutch Airlines, Philippine Airlines, and World Atlantic will also adhere to the TSA Precheck program in flights departing from US airports.
For further information about TSA PreCheck, visit the following link where the most frequently asked questions are solved.