Route Reliability
Des Moines → Chicago
DSM–MDW · 306 miles · Des Moines International Airport to Chicago Midway International Airport
75
Usually Fine
WanderNerd Reliability Score
- 82%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 2.4%
- Cancelled
- 168
- Flights in the data
Data through May 2026.
Southwest Airlines is the only airline in this data on this route, arriving on time 82% of the time across 168 flights. No comparison to make.
What the data says
Morning-you made the right choice.
DSM–MDW flights departing between 3–6 AM arrived on time 89% of the time, versus 74% between 3–6 PM.
Mondays have been rough.
DSM–MDW flights arrived on time 96% of the time on Wednesdays and just 73% on Mondays. That gap is worth planning around.
Flights on this route
The breakdown
- Mon73%(22 flights)
- Tue83%(24 flights)
- Wed96%(24 flights)
- Thu76%(25 flights)
- Fri83%(24 flights)
- Sat78%(18 flights)
- Sun80%(25 flights)
- 3–6 AM89%(83 flights)
- 6–9 AM—(1 flights)
- 3–6 PM74%(78 flights)
77%
May
Mar 78% → May 77% on time
| Month | On-time percentage | Flights |
|---|---|---|
| March 2026 | 78% | 50 |
| April 2026 | 89% | 55 |
| May 2026 | 77% | 57 |
Same trip, other airports
Keep nerding
Based on 168 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.