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Security Screening and Checkpoints

Security Checkpoint Map

Click here for a printable PDF of this map

Security checkpoints at Sea-Tac are managed by the Transportation Security Administration.

There are four main checkpoints at Sea-Tac and a fifth that is opened as needed during peak periods. 

Travelers can access all gates (A,B,C,D,S & N) from any checkpoint. The central checkpoint is open 24/7.
Sea-Tac recommends passengers arrive two hours before domestic travel and three hours before international travel..

Checkpoint Hours of Operation

Checkpoint 1

Seasonal Only

Closed - Open seasonally during peak periods

Checkpoint 2

General screening, Pre-Check, Premium, ADA, Clear

Open Daily    
4:00 a.m. - 8:00 p.m.

Checkpoint 3

General screening, Pre-Check, Premium, ADA, Clear

Open Daily
24 hours

Checkpoint 4

Pre-Check Only

Open Daily    
4:00 a.m. - 8:00 p.m.

Checkpoint 5

Pre-Check Only

Open Daily    
4:00 a.m. - 10:30 p.m.

*Hours subject to change based on TSA operations

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