Route
MKE → STL
General Mitchell International Airport St. Louis Lambert International Airport
How punctual is this route?
- On-time arrivals
- 88.6%
- Less than 15 minutes late
- Cancelled
- 0.9%
- Of scheduled flights
- Average delay when late
- 66 min
- Flights arriving 15+ minutes late
- Flights tracked
- 681
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 53%
- Airline (crew, maintenance, cleaning) 33%
- Air traffic control & airport 13%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 95.0% | 60 |
| October 2025 | 96.5% | 57 |
| November 2025 | 92.5% | 54 |
| December 2025 | 82.8% | 58 |
| January 2026 | 87.3% | 57 |
| February 2026 | 98.1% | 52 |
| March 2026 | 78.4% | 54 |
| April 2026 | 94.7% | 58 |
| May 2026 | 85.2% | 61 |
| June 2026 | 83.6% | 55 |
| July 2026 | 81.0% | 58 |
| August 2026 | 87.7% | 57 |
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 | 681 | 88.6% | 0.9% | 66 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN1076
13% late · 64 flights
-
WN2387
13% late · 55 flights
-
WN2827
11% late · 55 flights
-
WN2327
8% late · 51 flights
-
WN3456
0% late · 50 flights
-
WN1967
5% late · 42 flights
-
WN1111
10% late · 33 flights
-
WN2381
10% late · 31 flights
-
WN3047
0% late · 31 flights
-
WN4661
30% late · 27 flights
-
WN2706
15% late · 26 flights
-
WN3947
8% late · 26 flights
-
WN1753
30% late · 24 flights
-
WN928
0% late · 21 flights
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