City of Colorado Springs Municipal (COS) Delays and On-Time Departures
Colorado Springs, CO · ranked 185th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
80.0% of the 13,185 flights scheduled to depart Colorado Springs (COS) in the last 12 months left on time, 2.6 points above the US average of 77.4%.
That ranks 185th of 333 US airports tracked on this site, with 1.1% of departures cancelled.
Among airlines at Colorado Springs (COS), Delta Air Lines left on time most often (87.5%).
Over 24 months, Saturday was the most reliable day (83% on time) and July the worst month (73%).
Best time of day to fly out of Colorado Springs (COS)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 93.3% | 1.3% | 1,379 |
| 6am–7am | 92.4% | 0.8% | 3,392 |
| 7am–8am | 89.5% | 1.2% | 2,453 |
| 8am–9am | 89.6% | 0.7% | 1,979 |
| 9am–10am | 83.5% | 0.5% | 1,336 |
| 10am–11am | 82.9% | 1.3% | 2,274 |
| 11am–12pm | 82.4% | 0.7% | 1,901 |
| 12pm–1pm | 74.7% | 1.3% | 2,522 |
| 1pm–2pm | 79.2% | 0.9% | 1,794 |
| 2pm–3pm | 73.6% | 0.7% | 922 |
| 3pm–4pm | 67.8% | 1.7% | 1,275 |
| 4pm–5pm | 66.0% | 1.4% | 1,183 |
| 5pm–6pm | 67.6% | 1.6% | 1,856 |
| 6pm–7pm | 64.9% | 3.3% | 1,231 |
| 7pm–8pm | 57.4% | 0.6% | 347 |
| 8pm–9pm | 63.1% | 0.0% | 260 |
| 9pm–10pm | 50.0% | 0.0% | 38 |
Airlines at COS ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| Delta Air Lines | 87.5% | 89.4% | 1.8% | 627 |
| Envoy Air | 87.2% | 86.8% | 1.6% | 254 |
| SkyWest Airlines | 82.3% | 82.7% | 1.4% | 5,783 |
| Allegiant Air | 81.4% | 77.6% | 0.4% | 265 |
| United Airlines | 77.4% | 75.6% | 0.9% | 759 |
| Southwest Airlines | 77.0% | 79.6% | 0.3% | 4,457 |
| American Airlines | 76.0% | 75.7% | 2.9% | 1,040 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of COS
On-time departures by day, 24 months.
Best month to fly out of COS
On-time departures by month, 24 months.
Holiday travel at Colorado Springs (COS)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 81.0% | -0.9 pts | 1.0% | 511 |
| Christmas & New Year (Dec 20 - Jan 3) | 77.7% | -4.2 pts | 0.6% | 1,115 |
| Summer peak (Jun 15 - Aug 15) | 74.9% | -7.1 pts | 1.2% | 4,882 |
| All other days | 82.0% | — | 1.2% | 19,634 |
Monthly on-time departure trend at COS
On-time departure % each month, with the 12-month US average for reference.
Routes from Colorado Springs (COS)
Every route from COS with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| COS → Denver (DEN) | 80.5% | 1.1% | 5,008 |
| COS → Dallas/Fort Worth (DFW) | 78.0% | 2.5% | 1,933 |
| COS → Phoenix (PHX) | 81.6% | 0.1% | 1,001 |
| COS → Chicago (ORD) | 75.4% | 2.1% | 1,001 |
| COS → Las Vegas (LAS) | 80.2% | 0.0% | 861 |
| COS → Dallas (DAL) | 81.8% | 0.9% | 799 |
| COS → Salt Lake City (SLC) | 93.3% | 0.1% | 721 |
| COS → Atlanta (ATL) | 89.2% | 1.9% | 589 |
| COS → Houston (IAH) | 88.2% | 0.4% | 247 |
| COS → Houston (HOU) | 87.5% | 0.0% | 193 |
| COS → Chicago (MDW) | 75.0% | 1.1% | 189 |
| COS → San Diego (SAN) | 65.7% | 0.0% | 169 |