Route · ORD → BUF · 2020–2025 BTS data
Chicago to Buffalo
The ORD–BUF corridor (Chicago, IL → Buffalo, NY) runs ahead of the national average, served by 37 carriers across roughly 474 miles.
Data updated 2026-06-13
- 79%
- On-time
- +0 pts
- vs US avg
- 72 min
- Delay when late
- 9,803
- Flights
Cancelled
1.6%
Best Month
Apr 2025 89%
Worst Month
Jul 2025 62%
Distance
474 mi
Carriers
37
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 165 | 52 | 8 | 0 | YX,AA,MQ,UA,OO |
| Nov 2025 | 189 | 46 | 12 | 0 | OO,UA,MQ,AA,YX |
| Oct 2025 | 181 | 43 | 0 | 1 | AA,OO,UA,YX,MQ |
| Sep 2025 | 179 | 39 | 1 | 0 | MQ,UA,AA |
| Aug 2025 | 183 | 46 | 3 | 0 | OO,YX,AA,MQ,UA |
| Jul 2025 | 214 | 82 | 0 | 0 | AA,OO,UA,YX,MQ |
| Jun 2025 | 189 | 54 | 7 | 0 | AA,OO,UA,YX,MQ |
| May 2025 | 232 | 50 | 2 | 1 | UA,YX,MQ |
| Apr 2025 | 203 | 22 | 3 | 1 | MQ,OO,UA,YX |
| Mar 2025 | 148 | 34 | 0 | 0 | UA,MQ |
| Feb 2025 | 122 | 26 | 1 | 0 | UA,YX,MQ |
| Jan 2025 | 123 | 39 | 1 | 3 | YX,UA,MQ |
| Dec 2024 | 158 | 34 | 0 | 1 | MQ,OO,UA,YX |
| Nov 2024 | 143 | 22 | 0 | 0 | UA,MQ,AA |
| Oct 2024 | 161 | 26 | 0 | 0 | UA,MQ,OO,AA |
| Sep 2024 | 160 | 24 | 0 | 0 | YX,OO,UA,AA,MQ |
| Aug 2024 | 163 | 53 | 2 | 0 | AA,MQ,OO,UA |
| Jul 2024 | 176 | 59 | 2 | 0 | AA,MQ,OO,UA,YX |
| Jun 2024 | 204 | 57 | 3 | 0 | AA,MQ,OO,UA,YX |
| May 2024 | 172 | 46 | 2 | 0 | MQ,YX,OO,UA |
| Apr 2024 | 148 | 22 | 0 | 0 | MQ,OO,UA,YX |
| Mar 2024 | 138 | 19 | 0 | 1 | MQ,YX,OO,UA |
| Feb 2024 | 125 | 25 | 0 | 0 | MQ,OO,UA |
| Jan 2024 | 121 | 33 | 17 | 1 | MQ,YX,OO,UA |
Cancellation Rate
1.6%
64 of 3,997 flights
Diversion Rate
0.2%
9 of 3,997 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
ORD - 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 ORD 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 ORD–BUF.
Routes with a similar on-time rate
What the Data Says About ORD to BUF
9,803 tracked flights put the ORD to BUF pairing (Chicago to Buffalo) at a 79% on-time rate, squarely in line with the wider network. Delays that do occur run 71.9 minutes on average. Across the 474-mile route and its 37 carriers, the trailing 24 months show 1.6% cancelled and 0.2% diverted (3,997 flights sampled).
The monthly split is wide on this route: Apr 2025 posted the strongest performance at 89% on-time, while Jul 2025 came in at just 62% - a 28-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.