What is Secure Flight?

What does Secure Flight do before you get to the airport?

Passenger prescreening is the part of aviation security that happens before the airport: a government authority compares the details held in a booking against lists of known or trusted travellers, so that the checkpoint and the airline already know how that person should be handled. The output is an instruction about screening, not a document the traveller carries.

TSA describes Secure Flight as risk-based, with the aim of identifying low-risk and high-risk passengers before they arrive at the airport by matching their names against trusted traveller lists and watchlists. [4] The screening instructions travel back to the airlines in three broad outcomes: low-risk passengers who are eligible for TSA PreCheck, individuals on the Selectee List who are designated for enhanced screening, and passengers who will receive standard screening. [4]

The programme also prevents individuals on the No Fly List and on the Centers for Disease Control and Prevention Do Not Board List from boarding an aircraft. [4] Because the instruction reaches the airline rather than the traveller, a passenger often first sees the outcome in how a reservation is handled or in the indicator printed on the boarding pass.

TSA says it adjusts processes and procedures to meet the evolving threat, so procedures at the checkpoint can change from time to time. [4]

What passenger data does Secure Flight use?

TSA says the programme collects the minimum amount of personal information needed for effective matching — full name, date of birth and sex — and that personal data is collected, used, distributed, stored and disposed of according to stringent guidelines. [4] TSA points to a Privacy Impact Assessment and a System of Records Notice for the programme's privacy protections. [4]

The names compared are those on the reservation, which is why the name on a booking matters beyond the airline's own records. The low-risk outcome feeds TSA PreCheck: travellers enrol, then enter their Known Traveler Number in airline reservations and travel profiles so the PreCheck indicator appears on the boarding pass. [3] TSA PreCheck gives five years of benefits for $85 or less. [3] U.S. Customs and Border Protection lists TSA PreCheck among its Trusted Traveler Programs, which it describes as providing expedited travel for pre-approved, low-risk travellers through dedicated lanes and kiosks. [5]

For the wider vocabulary of airport credentials and traveller numbers, see the frequent flyer glossary.

Why can a name mismatch hold up check-in or the checkpoint?

Names on identity documents and airline records rarely match character for character, and TSA's identification rules allow some variation: suffixes are not required on boarding passes, and a suffix appearing on one document but not the other is treated as an acceptable variation. [2]

Identity verification itself is a condition of getting through, however. Adult passengers 18 and older must show valid identification at the airport checkpoint in order to travel, and if a traveller's identity cannot be verified, that traveller will not be allowed to enter the screening checkpoint. [2] From 1 February 2026, a traveller who cannot provide an acceptable form of ID at a TSA checkpoint has the option to pay a $45 fee to use TSA ConfirmID, after which TSA attempts to verify identity so that airport security screening can begin. [2]

When a traveller believes a screening problem follows them because of the records attached to their name, the Travel Redress Program is the channel TSA names: it provides resolution for travel-related screening or inspection issues. [4] Travellers who want the underlying terms in one place can start from the glossary index.

Exceptions and limits

• Children. TSA does not require children under 18 to provide identification when travelling within the United States, but unaccompanied minors who are eligible for TSA PreCheck must show an acceptable ID to receive expedited screening, and airline-specific ID requirements for travellers under 18 are a matter for the airline. [2]
• Expired ID. TSA currently accepts expired ID up to two years after expiration, for the forms of identification on its acceptable list. [2]
• REAL ID. As of 7 May 2025, state-issued driver's licences and IDs that are not REAL ID-compliant are no longer accepted as valid forms of identification at airports; travellers without another acceptable form of ID, such as a passport, need to enrol for a state-issued REAL ID. [2]
• No guaranteed outcome. TSA uses unpredictable security measures, both seen and unseen, and no individual is guaranteed expedited screening. [3] [4] Even passengers who normally receive expedited screening, such as TSA PreCheck passengers, may at times receive a pat-down. [4]
• Enhanced screening at the checkpoint. Some passengers will be required to undergo advanced imaging technology screening if their boarding pass indicates that they have been selected for enhanced screening, in accordance with TSA regulations, before they arrive at the security checkpoint. [4]
• Scope. Secure Flight is prescreening; the physical search of people and bags, the pat-down procedure, screening technology and baggage inspection are separate checkpoint processes described by TSA. [4] Passengers can compare these terms in the glossary of frequent flyer terms.

Frequently asked questions

Does Secure Flight decide whether I can board?

It can. Secure Flight transmits screening instructions to the airline, and it prevents individuals on the No Fly List and on the Centers for Disease Control and Prevention Do Not Board List from boarding an aircraft. [4]

What information does Secure Flight collect about me?

TSA says the programme collects the minimum personal information necessary for effective matching, such as full name, date of birth and sex. [4]

Why did I get standard screening despite having TSA PreCheck?

TSA uses unpredictable security measures and states that no individual is guaranteed expedited screening, so the PreCheck outcome is never unconditional. [3] [4]

What can I do if a watchlist match keeps causing screening problems?

TSA's Travel Redress Program provides resolution for travel-related screening or inspection issues. [4]

Do children need an acceptable ID at the checkpoint?

TSA does not require identification from children under 18 travelling within the United States, but an unaccompanied minor who is eligible for TSA PreCheck must show an acceptable ID to receive expedited screening. [2]

Related pages

Browse the glossary of frequent flyer terms for the vocabulary that sits around this programme, including identity verification at the checkpoint, Known Traveler Numbers and travel redress. The same glossary index is the place to look up airport security terms that are often confused with prescreening.

Sources

Sources accessed on 18 October 2026. This page covers the TSA Secure Flight programme together with the TSA checkpoint identification rules and TSA PreCheck terms that interact with it; airline-side reservation systems, the other U.S. Trusted Traveler Programs such as Global Entry, NEXUS, SENTRI and FAST, and prescreening schemes run outside the United States are not covered here.

1. TSA, Acceptable Identification at the TSA Checkpoint, checked 18 October 2026
2. TSA PreCheck programme page, checked 18 October 2026
3. TSA, Security Screening (Secure Flight section), checked 18 October 2026
4. U.S. Customs and Border Protection, Travel, checked 18 October 2026