Airports › Colorado Springs (COS) › December 2025
Airport month · December 2025
City of Colorado Springs Municipal in December 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 December 2025, reporting carriers scheduled 1,114 domestic departures from City of Colorado Springs Municipal (COS). 76.3% left less than 15 minutes late and 77.2% reached their destination on time; 0.7% were cancelled.
Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so COS departures were 4.3 points above the national departure figure.
A year earlier, in December 2024, the airport had 1,051 departures with 83.3% leaving on time: a change of −7.0 points, with flights up 6%.
Flights arriving at COS that month were on time 72.5% of the time (1,113 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 41%, air carrier 32% and national aviation system 21%.
- On time 77.2%
- Arrived 15+ minutes late 22.1%
- Cancelled 0.7%
- Diverted 0.0%
December 2025 against a year earlier, the airport's year and the nation
| Measure | Dec 2025 | Dec 2024 | COS, 12 months to Jul 2026 | All reported flights, Dec 2025 |
|---|---|---|---|---|
| Departed on time | 76.3% | 83.3% | 79.1% | 72.0% |
| Arrived on time | 77.2% | 85.7% | 79.8% | 71.9% |
| Cancelled | 0.7% | 0.5% | 1.1% | 1.5% |
| Average departure delay (late minutes only) | 19.5 min | 11.8 min | 16.8 min | 21.2 min |
| Scheduled departures a day | 37 | 35 | 36 | 19,410 |
| Scheduled departures | 1,114 | 1,051 | 13,185 | 582,304 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| OO SkyWest Airlines | 528 | 47% | 79.5% | 8.8 min | 1.3% |
| WN Southwest Airlines | 394 | 35% | 73.4% | 8.8 min | 0.0% |
| AA American Airlines | 97 | 9% | 74.2% | 8.9 min | 0.0% |
| DL Delta Air Lines | 33 | 3% | 81.8% | 2.8 min | 3.0% |
| G4 Allegiant Air | 25 | 2% | 80.0% | -6.9 min | 0.0% |
| UA United Airlines | 19 | 2% | 84.2% | 10.7 min | 0.0% |
| MQ Envoy Air | 18 | 2% | 88.9% | -4.0 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| COS–DEN | Colorado Springs to Denver | 441 | 77.1% | 5.1 min | 1.1% |
| COS–DFW | Colorado Springs to Dallas/Fort Worth | 153 | 77.8% | 11.7 min | 0.0% |
| COS–PHX | Colorado Springs to Phoenix | 91 | 70.3% | 8.4 min | 0.0% |
| COS–ORD | Colorado Springs to Chicago | 90 | 72.2% | 35.6 min | 0.0% |
| COS–DAL | Colorado Springs to Dallas | 75 | 78.7% | 9.2 min | 0.0% |
| COS–LAS | Colorado Springs to Las Vegas | 66 | 75.8% | 6.7 min | 0.0% |
| COS–SLC | Colorado Springs to Salt Lake City | 59 | 88.1% | -7.5 min | 1.7% |
| COS–ATL | Colorado Springs to Atlanta | 33 | 81.8% | 2.8 min | 3.0% |
| COS–SAN | Colorado Springs to San Diego | 17 | 70.6% | 20.3 min | 0.0% |
| COS–IAH | Colorado Springs to Houston | 16 | 93.8% | -21.9 min | 6.3% |
| COS–MDW | Colorado Springs to Chicago | 15 | 80.0% | 7.7 min | 0.0% |
| COS–BWI | Colorado Springs to Baltimore | 11 | 72.7% | 7.8 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left COS on time in December 2025?
76.3% of 1,114 scheduled domestic departures left less than 15 minutes late, and 77.2% reached their destination on time. The national figures that month were 72.0% and 71.9%.
How does that compare with a year earlier?
In December 2024, 83.3% of 1,051 departures left on time and 0.5% were cancelled, against 76.3% and 0.7% in December 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 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.