Best Time to Fly ORD to COS: On-Time Stats by Hour & Airline
Chicago O'Hare International → City of Colorado Springs Municipal
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 71.6% of Chicago (ORD) to Colorado Springs (COS) flights arrived on time (1,001 scheduled flights). That is 6.0 points below the national average of 77.6%.
United Airlines was the most punctual of the 2 airlines on the route at 81.4%, while SkyWest Airlines trailed at 69.5%.
September has been the best month (83% on time) and Friday the weakest day of the week (64%).
2.3% of flights were cancelled, versus 1.8% nationally.
ORD to COS on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| United Airlines | 81.4% | 55 min | 1.1% | 179 |
| SkyWest Airlines | 69.5% | 77 min | 2.5% | 822 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ORD to COS
On-time arrival % by scheduled departure hour (local time), 1,702 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 78.4% | 0.7% | 136 |
| 9am–10am | 77.0% | 0.9% | 840 |
| 10am–11am | 66.5% | 1.2% | 164 |
| 11am–12pm | Limited data | 1 | |
| 4pm–5pm | Limited data | 3 | |
| 7pm–8pm | 62.5% | 2.7% | 519 |
| 8pm–9pm | 59.0% | 0.0% | 39 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ORD to COS
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 45.2% | -28.4 pts | 3.1% | 32 |
| Christmas & New Year (Dec 20 - Jan 3) | 58.0% | -15.5 pts | 0.0% | 69 |
| Summer peak (Jun 15 - Aug 15) | 68.9% | -4.7 pts | 2.0% | 357 |
| All other days | 73.5% | — | 1.4% | 1,244 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).