Seattle–Tacoma International Airport in September 2025
Everything we hold for Seattle–Tacoma International Airport in September 2025: 37,564 flights (arrivals + departures) (the US BTS) · 39,932 tonnes of cargo (the US BTS) · 4,414,399 passengers (the US BTS) · 5,480,712 seats offered (the US BTS). Each figure carries the body that published it and how it was measured.
Day by day in this month
No day-level counts for this month.
Figure
4| How it is measured | Figure | Domestic / International | Source |
|---|---|---|---|
| Flights (arrivals + departures) all traffic at the airport | 37,564 | 33,576 / 3,988 | the US BTS |
| Tonnes of cargo all traffic at the airport | 39,932 | 27,911 / 12,021 | the US BTS |
| Passengers all traffic at the airport | 4,414,399 | 3,819,021 / 595,378 | the US BTS |
| Seats offered all traffic at the airport | 5,480,712 | 4,738,430 / 742,282 | the US BTS |