Route · MKE → STL · 2020–2025 BTS data
Milwaukee to St. Louis
The MKE–STL corridor (Milwaukee, WI → St. Louis, MO) runs ahead of the national average, served by 1 carrier across roughly 317 miles.
Data updated 2026-06-13
- 86.1%
- On-time
- +7.1 pts
- vs US avg
- 57 min
- Delay when late
- 3,567
- Flights
Cancelled
0.6%
Best Month
Aug 2024 97%
Worst Month
Mar 2024 72%
Distance
317 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 58 | 10 | 0 | 0 | WN |
| Nov 2025 | 54 | 4 | 1 | 0 | WN |
| Oct 2025 | 57 | 2 | 0 | 0 | WN |
| Sep 2025 | 60 | 3 | 0 | 0 | WN |
| Aug 2025 | 60 | 6 | 0 | 1 | WN |
| Jul 2025 | 57 | 8 | 0 | 0 | WN |
| Jun 2025 | 55 | 7 | 0 | 0 | WN |
| May 2025 | 53 | 3 | 0 | 0 | WN |
| Apr 2025 | 52 | 6 | 0 | 0 | WN |
| Mar 2025 | 54 | 8 | 0 | 0 | WN |
| Feb 2025 | 54 | 2 | 0 | 0 | WN |
| Jan 2025 | 58 | 7 | 2 | 0 | WN |
| Dec 2024 | 58 | 13 | 0 | 0 | WN |
| Nov 2024 | 54 | 8 | 0 | 0 | WN |
| Oct 2024 | 58 | 4 | 0 | 0 | WN |
| Sep 2024 | 60 | 4 | 0 | 0 | WN |
| Aug 2024 | 61 | 2 | 0 | 0 | WN |
| Jul 2024 | 57 | 8 | 0 | 1 | WN |
| Jun 2024 | 54 | 13 | 0 | 0 | WN |
| May 2024 | 54 | 13 | 0 | 0 | WN |
| Apr 2024 | 52 | 12 | 0 | 0 | WN |
| Mar 2024 | 53 | 15 | 0 | 0 | WN |
| Feb 2024 | 54 | 4 | 0 | 0 | WN |
| Jan 2024 | 59 | 11 | 5 | 0 | WN |
Cancellation Rate
0.6%
8 of 1,346 flights
Diversion Rate
0.1%
2 of 1,346 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
MKE - Milwaukee
Full on-time, delay-cause, and seasonal performance for Milwaukee, WI.
Origin airport →STL - St. Louis
Full on-time, delay-cause, and seasonal performance for St. Louis, MO.
Destination airport →Compare the two airports
See MKE and STL side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to MKE–STL.
Routes with a similar on-time rate
What the Data Says About MKE to STL
Milwaukee to St. Louis (MKE to STL) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.1% on-time rate across 3,567 flights, with delays that do happen averaging 57.4 minutes. The corridor runs roughly 317 miles and is served by 1 carrier. Over the most recent 24 months, 8 of 1,346 flights were cancelled (0.6%) and 2 diverted (0.1%).
The monthly split is wide on this route: Aug 2024 posted the strongest performance at 97% on-time, while Mar 2024 came in at just 72% - a 25-point swing worth factoring into travel timing.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.