Daily TSA Passenger Traffic
2024, 2025 and 2026 through equivalent datesJune 21
Monthly SEA TSA Screened Passenger Comparison
SEA airport-only screening totals · July totals include July 1-11 for all years| Month | 2024 | 2025 | 2026 | 2026 Avg/Day |
|---|---|---|---|---|
| January | 1,269,137 | 1,316,812 | 1,350,782 | 43,574 |
| February | 1,228,912 | 1,258,515 | 1,316,789 | 47,028 |
| March | 1,489,779 | 1,471,881 | 1,514,206 | 48,845 |
| April | 1,523,976 | 1,571,742 | 1,175,768 | 39,192 |
| May | 1,690,542 | 1,702,752 | 951,064 | 31,702 |
| June | 1,912,663 | 1,928,854 | 1,593,342 | 56,905 |
| July* | 710,152 | 723,845 | 724,614 | 65,874 |
SEA National Airport Ranking
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Flightline covers airline networks, airports, fleet activity, aviation safety, air cargo and the business of commercial aviation. Flightline Intel extends that reporting with original airport-level datasets and operational tools assembled from TSA, FAA, BTS, NOAA and other public sources.
Flightline and Flightline Intel are founded, edited and maintained by Greg Gayden, an aviation writer, author and analyst with nearly 25 years of aviation security and regulatory experience.
