Route · BWI → MKE · 2020–2025 BTS data
Baltimore to Milwaukee
The BWI–MKE corridor (Baltimore, MD → Milwaukee, WI) runs behind the national average, served by 3 carriers across roughly 641 miles.
Data updated 2026-06-13
- 76.3%
- On-time
- -2.7 pts
- vs US avg
- 58 min
- Delay when late
- 4,551
- Flights
Cancelled
1.0%
Best Month
Sep 2025 92%
Worst Month
Jul 2024 60%
Distance
641 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 75 | 27 | 2 | 0 | WN |
| Nov 2025 | 74 | 16 | 1 | 0 | WN |
| Oct 2025 | 89 | 18 | 0 | 0 | WN |
| Sep 2025 | 78 | 6 | 0 | 0 | WN |
| Aug 2025 | 79 | 12 | 1 | 1 | WN |
| Jul 2025 | 90 | 31 | 0 | 0 | NK,WN |
| Jun 2025 | 91 | 24 | 1 | 0 | WN,NK |
| May 2025 | 69 | 17 | 1 | 0 | WN,NK |
| Apr 2025 | 59 | 14 | 0 | 0 | WN |
| Mar 2025 | 55 | 10 | 1 | 0 | WN |
| Feb 2025 | 43 | 5 | 0 | 0 | WN |
| Jan 2025 | 45 | 6 | 3 | 0 | WN |
| Dec 2024 | 73 | 18 | 0 | 0 | WN |
| Nov 2024 | 73 | 12 | 0 | 0 | WN |
| Oct 2024 | 88 | 11 | 1 | 0 | WN |
| Sep 2024 | 94 | 13 | 0 | 0 | WN |
| Aug 2024 | 104 | 40 | 2 | 0 | NK,WN |
| Jul 2024 | 88 | 35 | 0 | 0 | WN |
| Jun 2024 | 83 | 31 | 0 | 0 | WN |
| May 2024 | 61 | 23 | 0 | 0 | WN |
| Apr 2024 | 59 | 21 | 0 | 0 | WN |
| Mar 2024 | 57 | 15 | 0 | 0 | WN |
| Feb 2024 | 54 | 6 | 0 | 0 | WN |
| Jan 2024 | 59 | 12 | 5 | 0 | WN |
Cancellation Rate
1.0%
18 of 1,740 flights
Diversion Rate
0.1%
1 of 1,740 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BWI - Baltimore
Full on-time, delay-cause, and seasonal performance for Baltimore, MD.
Origin airport →MKE - Milwaukee
Full on-time, delay-cause, and seasonal performance for Milwaukee, WI.
Destination airport →Compare the two airports
See BWI and MKE side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to BWI–MKE.
Routes with a similar on-time rate
What the Data Says About BWI to MKE
The Baltimore to Milwaukee corridor (BWI to MKE) posts a 76.3% on-time rate on the lower edge of the average band, based on 4,551 tracked flights. Late flights run 57.6 minutes behind on average. 3 carriers cover the 641-mile route; over the last 24 months, 18 of 1,740 flights were cancelled (1.0%) and 0.1% diverted.
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 92% on-time, while Jul 2024 came in at just 60% - a 32-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.