Route · MDW → BHM · 2020–2025 BTS data
Chicago to Birmingham
The MDW–BHM corridor (Chicago, IL → Birmingham, AL) runs behind the national average, served by 1 carrier across roughly 570 miles.
Data updated 2026-06-13
- 76.1%
- On-time
- -2.9 pts
- vs US avg
- 55 min
- Delay when late
- 2,706
- Flights
Cancelled
1.3%
Best Month
Oct 2024 89%
Worst Month
Jul 2024 58%
Distance
570 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 44 | 16 | 0 | 0 | WN |
| Nov 2025 | 45 | 6 | 2 | 0 | WN |
| Oct 2025 | 56 | 11 | 0 | 0 | WN |
| Sep 2025 | 47 | 8 | 0 | 0 | WN |
| Aug 2025 | 49 | 9 | 1 | 0 | WN |
| Jul 2025 | 57 | 20 | 1 | 0 | WN |
| Jun 2025 | 56 | 14 | 1 | 0 | WN |
| May 2025 | 56 | 8 | 0 | 0 | WN |
| Apr 2025 | 50 | 6 | 0 | 0 | WN |
| Mar 2025 | 31 | 6 | 1 | 0 | WN |
| Jan 2025 | 31 | 9 | 0 | 0 | WN |
| Dec 2024 | 44 | 6 | 0 | 0 | WN |
| Nov 2024 | 46 | 3 | 0 | 0 | WN |
| Oct 2024 | 55 | 6 | 0 | 0 | WN |
| Sep 2024 | 47 | 8 | 0 | 0 | WN |
| Aug 2024 | 49 | 12 | 0 | 0 | WN |
| Jul 2024 | 57 | 24 | 1 | 0 | WN |
| Jun 2024 | 55 | 21 | 0 | 0 | WN |
| May 2024 | 57 | 20 | 0 | 0 | WN |
| Apr 2024 | 55 | 8 | 0 | 0 | WN |
| Mar 2024 | 50 | 7 | 0 | 0 | WN |
| Feb 2024 | 42 | 4 | 0 | 0 | WN |
| Jan 2024 | 48 | 11 | 6 | 0 | WN |
| Dec 2023 | 62 | 15 | 2 | 0 | WN |
Cancellation Rate
1.3%
15 of 1,189 flights
Diversion Rate
0.0%
0 of 1,189 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
MDW - Chicago
Full on-time, delay-cause, and seasonal performance for Chicago, IL.
Origin airport →BHM - Birmingham
Full on-time, delay-cause, and seasonal performance for Birmingham, AL.
Destination airport →Compare the two airports
See MDW and BHM side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to MDW–BHM.
Routes with a similar on-time rate
What the Data Says About MDW to BHM
The Chicago to Birmingham corridor (MDW to BHM) posts a 76.1% on-time rate on the lower edge of the average band, based on 2,706 tracked flights. Late flights run 54.9 minutes behind on average. 1 carrier cover the 570-mile route; over the last 24 months, 15 of 1,189 flights were cancelled (1.3%) and 0.0% diverted.
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 89% on-time, while Jul 2024 came in at just 58% - a 31-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.