Chicago (ORD) to Colorado Springs (COS): On-Time Performance
Data through July 2026
The calendar drives reliability on ORD–COS. April 2025 flights landed on schedule 88% of the time, but December 2025 dropped to 53% — a gap of 35 points. Across the full period the route averages 71% on-time against a national 78%. Morning departures also hold up better than evening ones (76% vs 61%), which matters most in the rough months.
- On-time
- 71%
- arrived <15 min late
- Avg delay
- 21 min
- completed flights
- Cancelled
- 1.4%
- Flights/day
- 2.7
- last 12 months
- Duration
- 2h 60m
- scheduled
- Distance
- 911 mi
Best airline from ORD to COS
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 83% | 10 min | 0.6% | 317 |
| SkyWest Airlines | 68% | 24 min | 1.6% | 1,447 |
Monthly on-time trend
Best time to fly from ORD to COS
Aim for departures around 8 a.m. (78% on-time); avoid 8 p.m. departures (59%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 69% | 21 min |
| Tuesday | 73% | 24 min |
| Wednesdaybest | 75% | 16 min |
| Thursday | 70% | 20 min |
| Friday | 63% | 24 min |
| Saturday | 74% | 20 min |
| Sunday | 72% | 24 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft30%
- Airline operations37%
- National airspace system19%
- Weather14%
Frequently asked questions
- How often are flights from ORD to COS delayed?
- 29% of ORD–COS flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 21 minutes.
- Which airline is most reliable from ORD to COS?
- United Airlines has the best on-time record on this route at 83%, based on 317 flights. 2 airlines flew ORD–COS frequently enough to compare in this period.
- What is the best time of day to fly from ORD to COS?
- Departures around 8 a.m. have the best record (78% on-time), while departures around 8 p.m. have the worst (59%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ORD to COS?
- The scheduled ORD–COS flight time averages 2h 60m over 911 miles. Actual arrival times vary — flights on this route land 15+ minutes late 29% of the time.
- How often are ORD to COS flights cancelled?
- 1.4% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from ORD to COS?
- December 2025 was the roughest month in this dataset, with only 53% of arrivals on time. The best was April 2025 at 88%. If your dates are flexible, that 35-point gap is worth planning around.
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Based on 1,764 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.