Airports › Colorado Springs (COS) › September 2025
Airport month · September 2025
City of Colorado Springs Municipal in September 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 September 2025, reporting carriers scheduled 1,156 domestic departures from City of Colorado Springs Municipal (COS). 84.2% left less than 15 minutes late and 83.3% reached their destination on time; 0.7% were cancelled.
Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so COS departures were 1.1 points above the national departure figure.
A year earlier, in September 2024, the airport had 1,077 departures with 85.0% leaving on time: a change of −0.8 points, with flights up 7%.
Flights arriving at COS that month were on time 81.3% of the time (1,156 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 34%, national aviation system 28% and late-arriving aircraft 26%.
- On time 83.3%
- Arrived 15+ minutes late 15.7%
- Cancelled 0.7%
- Diverted 0.3%
September 2025 against a year earlier, the airport's year and the nation
| Measure | Sep 2025 | Sep 2024 | COS, 12 months to Jul 2026 | All reported flights, Sep 2025 |
|---|---|---|---|---|
| Departed on time | 84.2% | 85.0% | 79.1% | 83.1% |
| Arrived on time | 83.3% | 86.7% | 79.8% | 82.8% |
| Cancelled | 0.7% | 0.0% | 1.1% | 0.5% |
| Average departure delay (late minutes only) | 11.0 min | 12.7 min | 16.8 min | 12.2 min |
| Scheduled departures a day | 39 | 36 | 36 | 18,748 |
| Scheduled departures | 1,156 | 1,077 | 13,185 | 562,439 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| OO SkyWest Airlines | 526 | 46% | 86.1% | -1.1 min | 0.6% |
| WN Southwest Airlines | 381 | 33% | 82.7% | 4.2 min | 0.3% |
| AA American Airlines | 91 | 8% | 79.1% | 5.8 min | 4.4% |
| UA United Airlines | 89 | 8% | 64.0% | 13.1 min | 0.0% |
| DL Delta Air Lines | 56 | 5% | 96.4% | -13.0 min | 0.0% |
| G4 Allegiant Air | 10 | 1% | 100.0% | -19.9 min | 0.0% |
| MQ Envoy Air | 3 | 0% | 66.7% | -5.0 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| COS–DEN | Colorado Springs to Denver | 443 | 80.4% | 2.7 min | 0.2% |
| COS–DFW | Colorado Springs to Dallas/Fort Worth | 180 | 81.7% | 3.5 min | 3.3% |
| COS–ORD | Colorado Springs to Chicago | 90 | 77.8% | 7.1 min | 1.1% |
| COS–PHX | Colorado Springs to Phoenix | 77 | 83.1% | 5.0 min | 0.0% |
| COS–DAL | Colorado Springs to Dallas | 73 | 82.2% | 7.6 min | 0.0% |
| COS–LAS | Colorado Springs to Las Vegas | 73 | 79.5% | 5.8 min | 0.0% |
| COS–SLC | Colorado Springs to Salt Lake City | 60 | 91.7% | -10.6 min | 0.0% |
| COS–ATL | Colorado Springs to Atlanta | 49 | 95.9% | -14.2 min | 0.0% |
| COS–IAH | Colorado Springs to Houston | 30 | 100.0% | -12.0 min | 0.0% |
| COS–MDW | Colorado Springs to Chicago | 30 | 86.7% | 3.2 min | 0.0% |
| COS–BWI | Colorado Springs to Baltimore | 26 | 96.2% | -5.5 min | 0.0% |
| COS–PIE | Colorado Springs to St. Petersburg | 9 | 100.0% | -21.2 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left COS on time in September 2025?
84.2% of 1,156 scheduled domestic departures left less than 15 minutes late, and 83.3% reached their destination on time. The national figures that month were 83.1% and 82.8%.
How does that compare with a year earlier?
In September 2024, 85.0% of 1,077 departures left on time and 0.0% were cancelled, against 84.2% and 0.7% in September 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for COS · methodology · corrections.