Airports › Seattle (SEA) › November 2025
Airport month · November 2025
Seattle/Tacoma International in November 2025
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In November 2025, reporting carriers scheduled 12,616 domestic departures from Seattle/Tacoma International (SEA). 82.1% left less than 15 minutes late and 79.9% reached their destination on time; 1.7% were cancelled.
Nationally that month, 78.1% of flights departed on time and 77.3% arrived on time, so SEA departures were 4.0 points above the national departure figure.
A year earlier, in November 2024, the airport had 12,453 departures with 86.2% leaving on time: a change of −4.1 points, with flights up 1%.
Flights arriving at SEA that month were on time 80.4% of the time (12,610 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 40%, national aviation system 31% and late-arriving aircraft 23%.
- On time 79.9%
- Arrived 15+ minutes late 17.7%
- Cancelled 1.7%
- Diverted 0.7%
November 2025 against a year earlier, the airport's year and the nation
| Measure | Nov 2025 | Nov 2024 | SEA, 12 months to Jul 2026 | All reported flights, Nov 2025 |
|---|---|---|---|---|
| Departed on time | 82.1% | 86.2% | 78.2% | 78.1% |
| Arrived on time | 79.9% | 85.2% | 78.6% | 77.3% |
| Cancelled | 1.7% | 0.4% | 0.9% | 2.5% |
| Average departure delay (late minutes only) | 11.2 min | 8.1 min | 13.2 min | 15.6 min |
| Scheduled departures a day | 421 | 415 | 452 | 19,018 |
| Scheduled departures | 12,616 | 12,453 | 164,821 | 570,550 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| AS Alaska Airlines | 5,761 | 46% | 79.1% | 0.8 min | 1.2% |
| DL Delta Air Lines | 2,611 | 21% | 81.2% | 1.5 min | 0.8% |
| OO SkyWest Airlines | 2,312 | 18% | 84.3% | -2.8 min | 3.5% |
| UA United Airlines | 656 | 5% | 82.2% | 2.2 min | 1.5% |
| WN Southwest Airlines | 526 | 4% | 72.4% | 8.5 min | 2.3% |
| AA American Airlines | 462 | 4% | 76.0% | 11.8 min | 2.4% |
| HA Hawaiian Airlines | 145 | 1% | 56.6% | 38.5 min | 1.4% |
| F9 Frontier Airlines | 128 | 1% | 68.0% | 7.7 min | 3.1% |
| MQ Envoy Air | 15 | 0% | 86.7% | -2.9 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| SEA–LAX | Seattle to Los Angeles | 604 | 83.3% | -0.7 min | 1.5% |
| SEA–PHX | Seattle to Phoenix | 596 | 69.5% | 12.6 min | 1.7% |
| SEA–SFO | Seattle to San Francisco | 567 | 70.4% | 8.9 min | 2.3% |
| SEA–ANC | Seattle to Anchorage | 483 | 83.9% | -2.9 min | 1.2% |
| SEA–DEN | Seattle to Denver | 466 | 83.9% | -1.2 min | 2.6% |
| SEA–LAS | Seattle to Las Vegas | 445 | 78.2% | 5.2 min | 1.6% |
| SEA–GEG | Seattle to Spokane | 423 | 85.1% | -3.1 min | 3.3% |
| SEA–DFW | Seattle to Dallas/Fort Worth | 411 | 76.6% | 8.0 min | 1.7% |
| SEA–PDX | Seattle to Portland | 403 | 82.4% | -1.0 min | 3.7% |
| SEA–ORD | Seattle to Chicago | 390 | 71.3% | 15.2 min | 3.3% |
| SEA–SJC | Seattle to San Jose | 374 | 84.5% | 1.1 min | 0.5% |
| SEA–SMF | Seattle to Sacramento | 350 | 83.4% | -2.3 min | 0.6% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left SEA on time in November 2025?
82.1% of 12,616 scheduled domestic departures left less than 15 minutes late, and 79.9% reached their destination on time. The national figures that month were 78.1% and 77.3%.
How does that compare with a year earlier?
In November 2024, 86.2% of 12,453 departures left on time and 0.4% were cancelled, against 82.1% and 1.7% in November 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for November 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for SEA · methodology · corrections.