Route · ROC → MDW · 2020–2025 BTS data
Rochester to Chicago
The ROC–MDW corridor (Rochester, NY → Chicago, IL) runs ahead of the national average, served by 1 carrier across roughly 523 miles.
Data updated 2026-06-13
- 82.5%
- On-time
- +3.5 pts
- vs US avg
- 71 min
- Delay when late
- 1,360
- Flights
Cancelled
2.4%
Best Month
May 2023 91%
Worst Month
Jul 2023 44%
Distance
523 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Oct 2025 | 31 | 2 | 0 | 0 | WN |
| Sep 2025 | 30 | 3 | 0 | 0 | WN |
| Aug 2025 | 31 | 1 | 0 | 0 | WN |
| Jul 2025 | 31 | 7 | 1 | 0 | WN |
| Sep 2024 | 38 | 6 | 0 | 0 | WN |
| Aug 2024 | 41 | 6 | 2 | 0 | WN |
| Jul 2024 | 62 | 11 | 0 | 0 | WN |
| Jun 2024 | 58 | 10 | 0 | 0 | WN |
| May 2024 | 45 | 15 | 0 | 0 | WN |
| Apr 2024 | 38 | 9 | 0 | 0 | WN |
| Jan 2024 | 30 | 3 | 3 | 0 | WN |
| Nov 2023 | 31 | 6 | 0 | 0 | WN |
| Oct 2023 | 53 | 8 | 0 | 0 | WN |
| Sep 2023 | 52 | 9 | 0 | 0 | WN |
| Aug 2023 | 56 | 17 | 0 | 0 | WN |
| Jul 2023 | 52 | 29 | 0 | 1 | WN |
| Jun 2023 | 53 | 8 | 0 | 0 | WN |
| May 2023 | 54 | 5 | 0 | 0 | WN |
| Apr 2023 | 50 | 8 | 0 | 0 | WN |
| Mar 2023 | 54 | 12 | 2 | 0 | WN |
| Feb 2023 | 48 | 5 | 1 | 0 | WN |
| Jan 2023 | 54 | 6 | 3 | 1 | WN |
| Dec 2022 | 57 | 11 | 14 | 0 | WN |
| Nov 2022 | 56 | 7 | 0 | 0 | WN |
Cancellation Rate
2.4%
26 of 1,105 flights
Diversion Rate
0.2%
2 of 1,105 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
ROC - Rochester
Full on-time, delay-cause, and seasonal performance for Rochester, NY.
Origin airport →MDW - Chicago
Full on-time, delay-cause, and seasonal performance for Chicago, IL.
Destination airport →Compare the two airports
See ROC 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 ROC–MDW.
Routes with a similar on-time rate
Routes of a similar trip length
What the Data Says About ROC to MDW
Bureau of Transportation Statistics records show Rochester to Chicago (ROC to MDW) running a 82.5% on-time rate over 1,360 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 70.9 minutes. The 523-mile corridor is served by 1 carrier, and over the last 24 months 2.4% of 1,105 flights were cancelled, 0.2% diverted.
The monthly split is wide on this route: May 2023 posted the strongest performance at 91% on-time, while Jul 2023 came in at just 44% - a 47-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from ROC to MDW? ▼
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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.