Route · BWI → MDW · 2020–2025 BTS data
Baltimore to Chicago
The BWI–MDW corridor (Baltimore, MD → Chicago, IL) runs behind the national average, served by 3 carriers across roughly 611 miles.
Data updated 2026-06-13
- 78.1%
- On-time
- -0.9 pts
- vs US avg
- 60 min
- Delay when late
- 11,360
- Flights
Cancelled
1.3%
Best Month
Feb 2024 93%
Worst Month
May 2024 60%
Distance
611 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 138 | 47 | 2 | 1 | WN,F9 |
| Nov 2025 | 159 | 29 | 10 | 1 | F9,WN |
| Oct 2025 | 184 | 43 | 0 | 0 | WN,F9 |
| Sep 2025 | 181 | 25 | 1 | 0 | WN,F9 |
| Aug 2025 | 183 | 47 | 1 | 1 | WN,F9 |
| Jul 2025 | 187 | 68 | 8 | 0 | WN,F9 |
| Jun 2025 | 179 | 55 | 0 | 0 | WN,F9 |
| May 2025 | 181 | 41 | 1 | 1 | WN,F9 |
| Apr 2025 | 164 | 27 | 1 | 0 | F9,WN |
| Mar 2025 | 141 | 31 | 0 | 1 | WN,F9 |
| Feb 2025 | 119 | 16 | 0 | 1 | WN,F9 |
| Jan 2025 | 143 | 25 | 7 | 0 | WN,F9 |
| Dec 2024 | 155 | 30 | 1 | 0 | F9,WN |
| Nov 2024 | 156 | 19 | 1 | 0 | WN,F9 |
| Oct 2024 | 184 | 32 | 0 | 0 | WN,F9 |
| Sep 2024 | 180 | 31 | 0 | 0 | WN,F9 |
| Aug 2024 | 183 | 60 | 2 | 0 | F9,WN |
| Jul 2024 | 195 | 73 | 1 | 1 | F9,WN |
| Jun 2024 | 185 | 50 | 0 | 1 | F9,WN |
| May 2024 | 189 | 75 | 0 | 0 | F9,WN |
| Apr 2024 | 169 | 39 | 1 | 1 | F9,WN |
| Mar 2024 | 139 | 35 | 2 | 0 | WN |
| Feb 2024 | 116 | 8 | 0 | 0 | WN |
| Jan 2024 | 130 | 30 | 13 | 0 | WN |
Cancellation Rate
1.3%
52 of 3,940 flights
Diversion Rate
0.2%
9 of 3,940 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 →MDW - Chicago
Full on-time, delay-cause, and seasonal performance for Chicago, IL.
Destination airport →Compare the two airports
See BWI and MDW 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–MDW.
Routes with a similar on-time rate
What the Data Says About BWI to MDW
The Baltimore to Chicago corridor (BWI to MDW) posts a 78.1% on-time rate on the lower edge of the average band, based on 11,360 tracked flights. Late flights run 59.5 minutes behind on average. 3 carriers cover the 611-mile route; over the last 24 months, 52 of 3,940 flights were cancelled (1.3%) and 0.2% diverted.
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 93% on-time, while May 2024 came in at just 60% - a 33-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from BWI to MDW? ▼
What is the cancellation rate for BWI to MDW? ▼
How far is the flight from BWI to MDW? ▼
When is the best time to fly from BWI to MDW? ▼
Flight Guides
Tips and data-driven advice for choosing reliable routes.
Explore PlainFlights
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.