Route
PHL → MDW
Philadelphia International Airport Chicago Midway International Airport
How punctual is this route?
- On-time arrivals
- 73.0%
- Less than 15 minutes late
- Cancelled
- 1.8%
- Of scheduled flights
- Average delay when late
- 77 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,514
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 47%
- Air traffic control & airport 26%
- Airline (crew, maintenance, cleaning) 24%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 84.3% | 159 |
| October 2025 | 76.8% | 155 |
| November 2025 | 77.8% | 136 |
| December 2025 | 59.0% | 122 |
| January 2026 | 75.3% | 96 |
| February 2026 | 84.8% | 84 |
| March 2026 | 64.0% | 93 |
| April 2026 | 83.5% | 111 |
| May 2026 | 73.9% | 119 |
| June 2026 | 71.2% | 143 |
| July 2026 | 70.2% | 150 |
| August 2026 | 57.3% | 146 |
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 | 1,458 | 72.6% | 1.9% | 78 min |
| Frontier Airlines | 56 | 82.1% | 0.0% | 68 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN1138
12% late · 58 flights
-
WN2551
36% late · 58 flights
-
WN3728
9% late · 58 flights
-
WN3730
40% late · 58 flights
-
WN4904
15% late · 58 flights
-
WN3729
18% late · 57 flights
-
F91617
18% late · 56 flights
-
WN3762
43% late · 55 flights
-
WN3224
14% late · 52 flights
-
WN3226
41% late · 52 flights
-
WN419
35% late · 47 flights
-
WN4038
23% late · 45 flights
-
WN4837
30% late · 43 flights
-
WN2748
12% late · 42 flights
-
WN4202
17% late · 36 flights
-
WN4173
9% late · 33 flights
-
WN3541
61% late · 31 flights
-
WN356
0% late · 31 flights
-
WN2371
50% late · 28 flights
-
WN2756
54% late · 27 flights
-
WN4006
26% late · 27 flights
-
WN951
11% late · 27 flights
-
WN4337
64% late · 24 flights
-
WN4117
57% late · 23 flights
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