Route
BWI → MDW
Baltimore/Washington International Thurgood Marshall Airport Chicago Midway International Airport
How punctual is this route?
- On-time arrivals
- 75.1%
- Less than 15 minutes late
- Cancelled
- 2.4%
- Of scheduled flights
- Average delay when late
- 64 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,824
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 44%
- Airline (crew, maintenance, cleaning) 28%
- Air traffic control & airport 20%
- Extreme weather 7%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 86.1% | 181 |
| October 2025 | 76.6% | 184 |
| November 2025 | 80.4% | 159 |
| December 2025 | 65.2% | 138 |
| January 2026 | 86.7% | 127 |
| February 2026 | 82.1% | 117 |
| March 2026 | 68.1% | 125 |
| April 2026 | 82.3% | 132 |
| May 2026 | 79.3% | 140 |
| June 2026 | 69.5% | 171 |
| July 2026 | 64.5% | 181 |
| August 2026 | 63.8% | 169 |
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 | 1,768 | 75.1% | 2.4% | 64 min |
| Frontier Airlines | 56 | 75.9% | 1.8% | 63 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN995
10% late · 60 flights
-
WN2333
28% late · 57 flights
-
F93087
24% late · 56 flights
-
WN955
14% late · 54 flights
-
WN997
35% late · 53 flights
-
WN2365
9% late · 47 flights
-
WN235
16% late · 46 flights
-
WN2285
5% late · 42 flights
-
WN999
72% late · 42 flights
-
WN3027
12% late · 41 flights
-
WN1539
33% late · 40 flights
-
WN1752
26% late · 40 flights
-
WN1755
35% late · 39 flights
-
WN4217
31% late · 36 flights
-
WN1753
21% late · 35 flights
-
WN1583
21% late · 33 flights
-
WN2015
6% late · 32 flights
-
WN2455
6% late · 32 flights
-
WN3338
19% late · 31 flights
-
WN3493
13% late · 31 flights
-
WN1005
30% late · 27 flights
-
WN1801
19% late · 27 flights
-
WN2574
4% late · 27 flights
-
WN259
15% late · 27 flights
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