Atlanta (ATL) to Colorado Springs (COS): On-Time Performance
Data through July 2026
The calendar drives reliability on ATL–COS. September 2025 flights landed on schedule 94% of the time, but July 2024 dropped to 54% — a gap of 40 points. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (85% vs 69%), which matters most in the rough months.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 1.6
- last 12 months
- Duration
- 3h 9m
- scheduled
- Distance
- 1,184 mi
Monthly on-time trend
Best time to fly from ATL to COS
Aim for departures around 11 a.m. (85% on-time); avoid 8 p.m. departures (69%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 73% | 15 min |
| Tuesday | 79% | 17 min |
| Wednesdaybest | 82% | 9 min |
| Thursday | 79% | 11 min |
| Friday | 77% | 16 min |
| Saturday | 78% | 15 min |
| Sunday | 69% | 22 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft16%
- Airline operations57%
- National airspace system17%
- Weather9%
Frequently asked questions
- How often are flights from ATL to COS delayed?
- 24% of ATL–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 15 minutes.
- What is the best time of day to fly from ATL to COS?
- Departures around 11 a.m. have the best record (85% on-time), while departures around 8 p.m. have the worst (69%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ATL to COS?
- The scheduled ATL–COS flight time averages 3h 9m over 1,184 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are ATL to COS flights cancelled?
- 1.3% 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 ATL to COS?
- July 2024 was the roughest month in this dataset, with only 54% of arrivals on time. The best was September 2025 at 94%. If your dates are flexible, that 40-point gap is worth planning around.
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Related guides
Based on 1,167 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.