Route
MDW → MEM
Chicago Midway International Airport Frederick W. Smith International Airport
How punctual is this route?
- On-time arrivals
- 78.5%
- Less than 15 minutes late
- Cancelled
- 1.3%
- Of scheduled flights
- Average delay when late
- 70 min
- Flights arriving 15+ minutes late
- Flights tracked
- 675
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 57%
- Airline (crew, maintenance, cleaning) 28%
- Air traffic control & airport 12%
- Extreme weather 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 85.5% | 56 |
| October 2025 | 91.4% | 58 |
| November 2025 | 78.8% | 54 |
| December 2025 | 80.7% | 58 |
| January 2026 | 89.2% | 40 |
| February 2026 | 90.7% | 43 |
| March 2026 | 67.2% | 60 |
| April 2026 | 80.0% | 60 |
| May 2026 | 88.7% | 62 |
| June 2026 | 61.7% | 60 |
| July 2026 | 65.0% | 62 |
| August 2026 | 71.0% | 62 |
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 | 675 | 78.5% | 1.3% | 70 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN4100
56% late · 61 flights
-
WN2824
22% late · 60 flights
-
WN1646
17% late · 59 flights
-
WN209
19% late · 58 flights
-
WN4671
6% late · 53 flights
-
WN1792
17% late · 42 flights
-
WN1433
13% late · 39 flights
-
WN2174
53% late · 33 flights
-
WN117
16% late · 27 flights
-
WN2059
12% late · 27 flights
-
WN1737
15% late · 26 flights
-
WN4975
38% late · 24 flights
-
WN2976
17% late · 23 flights
-
WN423
11% late · 20 flights
-
WN4258
25% late · 20 flights
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