Route Reliability
Denver → Chicago
DEN–MDW · 895 miles · Denver International Airport to Chicago Midway International Airport
- 74%
- Arrive within 15 minutes
- 11 min
- Average arrival delay
- 1.7%
- Cancelled
- 2,385
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Southwest Airlines74%2,271 flights
- 2.Frontier Airlines67%114 flights
What the data says
Morning flights do better here.
DEN–MDW flights departing between 6–9 AM arrived on time 93% of the time, versus 49% between 9 PM–12 AM.
Sunday scaries are real for this one.
DEN–MDW flights arrived on time 82% of the time on Wednesdays. On Sundays: 68%.
Southwest Airlines runs this route best.
Southwest Airlines arrived on time 74% of the time on this route; Frontier Airlines managed 67%.
Slipping a little lately.
DEN–MDW flights arrived on time 75% of the time over the last three months in the data, compared with 80% in the three months before that.
Flights on this route
The breakdown
- Mon74%(374 flights)
- Tue77%(312 flights)
- Wed82%(303 flights)
- Thu70%(351 flights)
- Fri75%(366 flights)
- Sat75%(256 flights)
- Sun68%(370 flights)
- 3–6 AM92%(143 flights)
- 6–9 AM93%(475 flights)
- 9 AM–12 PM84%(372 flights)
- 12–3 PM75%(498 flights)
- 3–6 PM57%(405 flights)
- 6–9 PM54%(384 flights)
- 9 PM–12 AM49%(55 flights)
Jun 59% → May 76% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 59% | 272 |
| July 2025 | 67% | 286 |
| August 2025 | 67% | 222 |
| September 2025 | 79% | 203 |
| October 2025 | 84% | 214 |
| November 2025 | 86% | 172 |
| December 2025 | 72% | 192 |
| January 2026 | 87% | 156 |
| February 2026 | 80% | 137 |
| March 2026 | 72% | 162 |
| April 2026 | 76% | 155 |
| May 2026 | 76% | 161 |
Same trip, other airports
Keep nerding
Based on 2,385 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.