Route Reliability
Colorado Springs → Chicago
COS–MDW · 917 miles · Colorado Springs Airport to Chicago Midway International Airport
81
Pretty Reliable
WanderNerd Reliability Score
- 80%
- Arrive within 15 minutes
- 8 min
- Average arrival delay
- 0.4%
- Cancelled
- 233
- Flights in the data
Data through May 2026.
Southwest Airlines is the only airline in this data on this route, arriving on time 80% of the time across 233 flights. No comparison to make.
What the data says
Morning flights do better here.
COS–MDW flights departing between 6–9 AM arrived on time 100% of the time, versus 64% between 3–6 PM.
Sunday scaries are real for this one.
COS–MDW flights arrived on time 100% of the time on Saturdays and just 63% on Sundays. That gap is worth planning around.
Flights on this route
The breakdown
- Mon81%(36 flights)
- Tue79%(33 flights)
- Wed80%(30 flights)
- Thu79%(34 flights)
- Fri79%(38 flights)
- Sat100%(26 flights)
- Sun63%(32 flights)
- 6–9 AM100%(14 flights)
- 9 AM–12 PM86%(97 flights)
- 12–3 PM82%(51 flights)
- 3–6 PM64%(67 flights)
87%
Dec
Jun 73% → Dec 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 73% | 48 |
| July 2025 | 75% | 52 |
| August 2025 | 81% | 32 |
| September 2025 | 87% | 30 |
| October 2025 | 90% | 31 |
| November 2025 | 65% | 17 |
| December 2025 | 87% | 15 |
Same trip, other airports
Keep nerding
Based on 233 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.