Route
CMH → MDW
John Glenn Columbus International Airport Chicago Midway International Airport
How punctual is this route?
- On-time arrivals
- 79.7%
- Less than 15 minutes late
- Cancelled
- 1.6%
- Of scheduled flights
- Average delay when late
- 61 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,237
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 58%
- Airline (crew, maintenance, cleaning) 20%
- Air traffic control & airport 20%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 93.9% | 115 |
| October 2025 | 84.9% | 119 |
| November 2025 | 83.8% | 103 |
| December 2025 | 73.6% | 106 |
| January 2026 | 78.8% | 90 |
| February 2026 | 82.5% | 83 |
| March 2026 | 65.9% | 89 |
| April 2026 | 80.9% | 89 |
| May 2026 | 81.5% | 92 |
| June 2026 | 79.3% | 113 |
| July 2026 | 74.8% | 119 |
| August 2026 | 73.7% | 119 |
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 | 1,237 | 79.7% | 1.6% | 61 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN2037
32% late · 63 flights
-
WN1197
5% late · 61 flights
-
WN1419
12% late · 58 flights
-
WN1200
38% late · 52 flights
-
WN126
29% late · 50 flights
-
WN3104
24% late · 49 flights
-
WN1132
26% late · 48 flights
-
WN1254
9% late · 47 flights
-
WN4319
11% late · 46 flights
-
WN1199
29% late · 43 flights
-
WN4198
14% late · 35 flights
-
WN1946
32% late · 33 flights
-
WN3040
19% late · 33 flights
-
WN2420
3% late · 30 flights
-
WN1180
14% late · 28 flights
-
WN4386
12% late · 27 flights
-
WN2066
4% late · 26 flights
-
WN1420
17% late · 24 flights
-
WN2041
21% late · 24 flights
-
WN1623
60% late · 20 flights
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