Route · MDW → BUF · 2020–2025 BTS data
Chicago to Buffalo
The MDW–BUF corridor (Chicago, IL → Buffalo, NY) runs behind the national average, served by 1 carrier across roughly 468 miles.
Data updated 2026-06-13
- 74.4%
- On-time
- -4.6 pts
- vs US avg
- 55 min
- Delay when late
- 4,697
- Flights
Cancelled
1.1%
Best Month
Sep 2024 91%
Worst Month
Jun 2024 58%
Distance
468 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 60 | 17 | 1 | 0 | WN |
| Nov 2025 | 57 | 13 | 2 | 0 | WN |
| Oct 2025 | 59 | 15 | 0 | 0 | WN |
| Sep 2025 | 82 | 17 | 0 | 0 | WN |
| Aug 2025 | 84 | 21 | 1 | 0 | WN |
| Jul 2025 | 97 | 30 | 1 | 0 | WN |
| Jun 2025 | 90 | 25 | 1 | 0 | WN |
| May 2025 | 57 | 15 | 0 | 0 | WN |
| Apr 2025 | 50 | 9 | 0 | 0 | WN |
| Mar 2025 | 32 | 11 | 1 | 0 | WN |
| Jan 2025 | 34 | 6 | 1 | 0 | WN |
| Dec 2024 | 60 | 11 | 1 | 0 | WN |
| Nov 2024 | 56 | 7 | 0 | 0 | WN |
| Oct 2024 | 61 | 12 | 0 | 0 | WN |
| Sep 2024 | 88 | 8 | 0 | 0 | WN |
| Aug 2024 | 90 | 20 | 0 | 0 | WN |
| Jul 2024 | 85 | 34 | 1 | 0 | WN |
| Jun 2024 | 79 | 33 | 0 | 0 | WN |
| May 2024 | 80 | 28 | 0 | 0 | WN |
| Apr 2024 | 75 | 21 | 0 | 0 | WN |
| Mar 2024 | 63 | 12 | 0 | 0 | WN |
| Feb 2024 | 50 | 4 | 0 | 0 | WN |
| Jan 2024 | 56 | 19 | 7 | 0 | WN |
| Dec 2023 | 63 | 10 | 1 | 0 | WN |
Cancellation Rate
1.1%
18 of 1,608 flights
Diversion Rate
0.0%
0 of 1,608 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 →BUF - Buffalo
Full on-time, delay-cause, and seasonal performance for Buffalo, NY.
Destination airport →Compare the two airports
See MDW and BUF 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–BUF.
Routes with a similar on-time rate
What the Data Says About MDW to BUF
On-time performance on the MDW to BUF pairing (Chicago to Buffalo) trails a chunk of the network: 74.4% of 4,697 tracked flights arrived on schedule, with a 55.3-minute average delay on the ones that ran late. The route spans about 468 miles across 1 carrier. Cancellations over the trailing 24 months hit 1.1% (18 of 1,608 flights), with 0.0% diverted.
The monthly split is wide on this route: Sep 2024 posted the strongest performance at 91% on-time, while Jun 2024 came in at just 58% - a 33-point swing worth factoring into travel timing.
Frequently Asked Questions
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Flight Guides
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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.