Route
DEN → MDW
Denver International Airport Chicago Midway International Airport
How punctual is this route?
- On-time arrivals
- 74.4%
- Less than 15 minutes late
- Cancelled
- 1.6%
- Of scheduled flights
- Average delay when late
- 62 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,197
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 49%
- Airline (crew, maintenance, cleaning) 34%
- Air traffic control & airport 15%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 78.8% | 203 |
| October 2025 | 83.6% | 214 |
| November 2025 | 84.9% | 187 |
| December 2025 | 71.4% | 195 |
| January 2026 | 85.9% | 156 |
| February 2026 | 78.1% | 138 |
| March 2026 | 69.8% | 171 |
| April 2026 | 76.1% | 161 |
| May 2026 | 75.2% | 163 |
| June 2026 | 61.2% | 201 |
| July 2026 | 70.2% | 212 |
| August 2026 | 60.5% | 196 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Southwest Airlines | 2,140 | 74.1% | 1.6% | 61 min |
| Frontier Airlines | 57 | 83.9% | 1.8% | 93 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN2529
14% late · 69 flights
-
WN1603
39% late · 61 flights
-
WN755
12% late · 60 flights
-
WN1939
5% late · 58 flights
-
WN1941
12% late · 58 flights
-
WN1590
36% late · 57 flights
-
WN1604
74% late · 52 flights
-
WN1598
2% late · 51 flights
-
WN2090
24% late · 51 flights
-
WN482
12% late · 50 flights
-
WN1454
27% late · 42 flights
-
WN2532
25% late · 42 flights
-
WN818
20% late · 42 flights
-
WN2613
10% late · 41 flights
-
F92210
21% late · 40 flights
-
WN114
6% late · 36 flights
-
WN1601
39% late · 36 flights
-
WN1615
66% late · 36 flights
-
WN1447
42% late · 33 flights
-
WN2115
10% late · 33 flights
-
WN2556
18% late · 33 flights
-
WN2761
13% late · 33 flights
-
WN4651
68% late · 32 flights
-
WN1478
6% late · 31 flights
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