St. Louis (STL) Delays
#19 U.S. airport by BTS-tracked flight volume · 75.6% on-time departures, 79% on-time arrivals over the last 12 months · 2015–2026
63,718Flights
75.6%Departures on-time
17.4 minAvg dep. delay
79%Arrivals on-time
14.3 minAvg arr. delay
1.3%Cancelled
Delay causes (last 12 months)
- Air carrier31.3%
- Extreme weather4.3%
- National Aviation System19.5%
- Security0.1%
- Late-arriving aircraft44.8%
By year
| Year | Flights | Dep on-time | Arr on-time | Avg dep delay | Cancelled |
|---|---|---|---|---|---|
| 2026 | 25,098 | 76.8% | 80.1% | 16.6 min | 1.8% |
| 2025 | 64,202 | 77.1% | 79.8% | 16.3 min | 1.4% |
| 2024 | 65,597 | 78.6% | 80.8% | 14.7 min | 1.1% |
| 2023 | 61,885 | 77.8% | 79.9% | 15 min | 0.9% |
| 2022 | 58,985 | 75.7% | 78.2% | 16.4 min | 3.4% |
| 2021 | 47,532 | 81.4% | 83% | 12.5 min | 1.8% |
| 2020 | 45,426 | 92% | 92.6% | 5.3 min | 6.8% |
| 2019 | 68,401 | 78% | 81.6% | 14.2 min | 2.2% |
| 2018 | 66,197 | 78.6% | 82.2% | 13 min | 1.5% |
| 2017 | 56,988 | 80.8% | 82.3% | 11.7 min | 1.1% |
| 2016 | 55,570 | 81.4% | 82.9% | 11.5 min | 1% |
| 2015 | 51,277 | 80.9% | 82.2% | 11.8 min | 1.3% |
On-time = arrival within 15 minutes of schedule, per U.S. DOT definitions. Source: Bureau of Transportation Statistics (public domain). Delay-cause attribution is reported by carriers since June 2003.