Route · MDW → BWI · 2020–2025 BTS data
Chicago to Baltimore
The MDW–BWI corridor (Chicago, IL → Baltimore, MD) runs ahead of the national average, served by 3 carriers across roughly 611 miles.
Data updated 2026-06-13
- 79.7%
- On-time
- +0.7 pts
- vs US avg
- 59 min
- Delay when late
- 11,120
- Flights
Cancelled
1.6%
Best Month
Feb 2024 92%
Worst Month
Jul 2025 66%
Distance
611 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 140 | 34 | 1 | 0 | WN,F9 |
| Nov 2025 | 158 | 24 | 19 | 0 | F9,WN |
| Oct 2025 | 185 | 29 | 0 | 0 | WN,F9 |
| Sep 2025 | 180 | 26 | 0 | 0 | WN,F9 |
| Aug 2025 | 184 | 41 | 3 | 0 | WN,F9 |
| Jul 2025 | 188 | 63 | 8 | 1 | WN,F9 |
| Jun 2025 | 178 | 51 | 1 | 1 | WN,F9 |
| May 2025 | 167 | 40 | 0 | 0 | WN,F9 |
| Apr 2025 | 151 | 17 | 1 | 0 | F9,WN |
| Mar 2025 | 135 | 29 | 1 | 1 | WN,F9 |
| Feb 2025 | 116 | 18 | 1 | 0 | WN,F9 |
| Jan 2025 | 141 | 15 | 5 | 0 | WN,F9 |
| Dec 2024 | 155 | 29 | 0 | 0 | F9,WN |
| Nov 2024 | 156 | 18 | 1 | 0 | WN,F9 |
| Oct 2024 | 184 | 23 | 0 | 0 | WN,F9 |
| Sep 2024 | 179 | 24 | 0 | 0 | WN,F9 |
| Aug 2024 | 183 | 47 | 4 | 2 | F9,WN |
| Jul 2024 | 195 | 63 | 2 | 1 | F9,WN |
| Jun 2024 | 185 | 54 | 1 | 0 | F9,WN |
| May 2024 | 188 | 61 | 0 | 0 | F9,WN |
| Apr 2024 | 175 | 29 | 0 | 1 | F9,WN |
| Mar 2024 | 154 | 24 | 0 | 0 | WN |
| Feb 2024 | 115 | 9 | 0 | 0 | WN |
| Jan 2024 | 138 | 41 | 14 | 0 | WN |
Cancellation Rate
1.6%
62 of 3,930 flights
Diversion Rate
0.2%
7 of 3,930 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 →BWI - Baltimore
Full on-time, delay-cause, and seasonal performance for Baltimore, MD.
Destination airport →Compare the two airports
See MDW and BWI 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–BWI.
Routes with a similar on-time rate
What the Data Says About MDW to BWI
11,120 tracked flights put the MDW to BWI pairing (Chicago to Baltimore) at a 79.7% on-time rate, squarely in line with the wider network. Delays that do occur run 58.8 minutes on average. Across the 611-mile route and its 3 carriers, the trailing 24 months show 1.6% cancelled and 0.2% diverted (3,930 flights sampled).
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 92% on-time, while Jul 2025 came in at just 66% - a 26-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.