Route
RDU → MDW
Raleigh-Durham International Airport Chicago Midway International Airport
How punctual is this route?
- On-time arrivals
- 77.3%
- Less than 15 minutes late
- Cancelled
- 1.8%
- Of scheduled flights
- Average delay when late
- 60 min
- Flights arriving 15+ minutes late
- Flights tracked
- 960
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 54%
- Airline (crew, maintenance, cleaning) 21%
- Air traffic control & airport 20%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 88.9% | 90 |
| October 2025 | 77.5% | 80 |
| November 2025 | 93.9% | 85 |
| December 2025 | 82.0% | 89 |
| January 2026 | 90.2% | 67 |
| February 2026 | 89.1% | 56 |
| March 2026 | 66.7% | 66 |
| April 2026 | 79.2% | 74 |
| May 2026 | 67.1% | 80 |
| June 2026 | 67.0% | 88 |
| July 2026 | 66.7% | 92 |
| August 2026 | 65.6% | 93 |
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 | 960 | 77.3% | 1.8% | 60 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN4108
19% late · 63 flights
-
WN3774
7% late · 60 flights
-
WN3543
26% late · 57 flights
-
WN3766
43% late · 52 flights
-
WN2163
14% late · 50 flights
-
WN1549
9% late · 47 flights
-
WN2736
7% late · 47 flights
-
WN4516
53% late · 43 flights
-
WN4180
7% late · 42 flights
-
WN3998
44% late · 40 flights
-
WN3432
11% late · 35 flights
-
WN2972
38% late · 33 flights
-
WN3051
23% late · 31 flights
-
WN1010
15% late · 27 flights
-
WN3355
50% late · 24 flights
-
WN154
35% late · 23 flights
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