Airport reliability
Colorado Springs (COS) on-time performance
How reliably flights leave Colorado Springs, CO (COS) and reach their destinations, by airline, departure hour and month, September 2025 to August 2026.
Colorado Springs, CO13,158 departures in 12 months
- Departures on time
- 79.9% U.S. average 75.6%
- Cancelled
- 1.1% U.S. average 1.9%
- 60+ minutes late
- 7.2% U.S. average 8.1%
- Scheduled departures
- 13,158 12 months
What this means
COS departures beat the U.S. average.
- 79.9% of the 13,158 scheduled departures from Colorado Springs (COS) arrived at their destination on time, 4.3 points higher than the U.S. average of 75.6%.
- 1.1% of departures were cancelled (U.S. average 1.9%), and 7.2% arrived an hour or more late.
- Flights arriving at COS were on time 75.0% of the time.
- Among airlines with at least 300 departures, Delta Air Lines was the most punctual from COS (86.9%) and American Airlines the least (74.6%).
- Over the last 3 years, September was the most reliable month for departures from COS (85.0% on time) and July the least reliable (73.7%).
- Cancellations peaked in November, when 2.5% of flights were cancelled.
- Flights scheduled to depart 6 am to 7 am were the most punctual (92.5% on time); flights scheduled to depart 4 pm to 5 pm were the least (61.9%).
Airlines at COS
Ranked by on-time arrival
| Airline | On time | Cancelled | 60+ min late | Avg delay when late | Departures |
|---|---|---|---|---|---|
| Delta Air Lines | 86.9% | 1.5% | 4.5% | 90 min | 604 |
| Envoy AirSold as American Eagle | 85.5% | 1.5% | 5.0% | 71 min | 200 |
| SkyWest AirlinesSold as United Express, Delta Connection, American Eagle, Alaska | 81.0% | 1.5% | 7.7% | 95 min | 5,898 |
| Southwest Airlines | 79.1% | 0.4% | 6.3% | 58 min | 4,454 |
| Allegiant Air | 77.2% | 0.4% | 6.6% | 108 min | 259 |
| United Airlines | 76.1% | 0.8% | 8.4% | 74 min | 706 |
| American Airlines | 74.6% | 2.4% | 9.1% | 106 min | 1,037 |
Tap a heading to sort.
On-time rate by departure hour
Share of scheduled flights on time COS average 79.9%
Show as table
| Period | On time | Flights |
|---|---|---|
| Departing before 6 am | 90.7% | 875 |
| Departing 6 am to 7 am | 92.5% | 1,484 |
| Departing 7 am to 8 am | 88.5% | 1,333 |
| Departing 8 am to 9 am | 88.7% | 901 |
| Departing 9 am to 10 am | 84.7% | 691 |
| Departing 10 am to 11 am | 85.0% | 972 |
| Departing 11 am to noon | 80.0% | 1,060 |
| Departing noon to 1 pm | 74.4% | 1,306 |
| Departing 1 pm to 2 pm | 77.6% | 1,140 |
| Departing 2 pm to 3 pm | 69.5% | 292 |
| Departing 3 pm to 4 pm | 66.8% | 660 |
| Departing 4 pm to 5 pm | 61.9% | 544 |
| Departing 5 pm to 6 pm | 66.5% | 966 |
| Departing 6 pm to 7 pm | 66.1% | 561 |
| Departing 7 pm to 8 pm | 68.6% | 188 |
| Departing 8 pm to 9 pm | 70.3% | 155 |
| Departing 9 pm to 10 pm | Insufficient sample | 30 |
Best and worst months at COS
Share of scheduled flights on time 12-month average 79.9%
Show as table
| Period | On time | Flights |
|---|---|---|
| January | 78.3% | 2,854 |
| February | 81.4% | 2,637 |
| March | 81.6% | 3,068 |
| April | 79.3% | 3,035 |
| May | 76.8% | 3,289 |
| June | 74.1% | 3,502 |
| July | 73.7% | 3,679 |
| August | 76.1% | 3,576 |
| September | 85.0% | 3,276 |
| October | 84.2% | 3,410 |
| November | 80.9% | 3,153 |
| December | 81.0% | 3,182 |
Month by month, last 12 months
Share of scheduled flights on time U.S. average 75.6%
Show as table
| Period | On time | Flights |
|---|---|---|
| Sep 2025 | 83.3% | 1,156 |
| Oct 2025 | 83.1% | 1,227 |
| Nov 2025 | 79.7% | 1,112 |
| Dec 2025 | 77.2% | 1,114 |
| Jan 2026 | 80.4% | 924 |
| Feb 2026 | 85.7% | 854 |
| Mar 2026 | 80.5% | 1,059 |
| Apr 2026 | 83.8% | 1,034 |
| May 2026 | 82.4% | 1,119 |
| Jun 2026 | 74.0% | 1,160 |
| Jul 2026 | 76.0% | 1,189 |
| Aug 2026 | 74.7% | 1,210 |
Busiest routes from COS
| To | On time | Cancelled | Airlines | Flights |
|---|---|---|---|---|
| Denver (DEN) | 80.4% | 1.1% | 3 | 4,989 |
| Dallas/Fort Worth (DFW) | 75.9% | 2.2% | 3 | 1,933 |
| Phoenix (PHX) | 80.9% | 0.3% | 1 | 1,003 |
| Chicago (ORD) | 72.5% | 2.1% | 2 | 1,001 |
| Las Vegas (LAS) | 79.8% | 0.1% | 1 | 865 |
| Dallas (DAL) | 80.4% | 0.9% | 1 | 786 |
| Salt Lake City (SLC) | 91.7% | 0.1% | 1 | 721 |
| Atlanta (ATL) | 86.8% | 1.5% | 1 | 597 |
| Houston (IAH) | 85.6% | 0.4% | 1 | 236 |
| Houston (HOU) | 86.3% | 0.0% | 1 | 211 |
| Chicago (MDW) | 72.7% | 1.1% | 1 | 187 |
| San Diego (SAN) | 66.3% | 0.0% | 1 | 187 |
| St. Petersburg (PIE) | 82.1% | 0.9% | 1 | 106 |
| Minneapolis (MSP) | 77.4% | 0.0% | 2 | 93 |
| Santa Ana (SNA) | 80.5% | 0.0% | 1 | 87 |
| Baltimore (BWI) | 91.5% | 0.0% | 1 | 71 |
| Phoenix (AZA) | 65.2% | 0.0% | 1 | 66 |
Sources & data dates
- Source
- U.S. DOT Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987-present)
- Period
- September 2025 to August 2026 (12 months); month-of-year patterns September 2023 to August 2026
- Data through
- August 2026
- Processed
- 2026-11-03
- Scope
- Scheduled nonstop domestic departures from Colorado Springs, CO (COS) by airlines that report to the DOT.
- Method
- Rates use all scheduled flights as the denominator; cancelled and diverted flights count as not on time. Figures based on fewer than 50 scheduled flights are suppressed. Full methodology.