Route · BWI → BUF · 2020–2025 BTS data
Baltimore to Buffalo
The BWI–BUF corridor (Baltimore, MD → Buffalo, NY) runs behind the national average, served by 1 carrier across roughly 281 miles.
Data updated 2026-06-13
- 74.6%
- On-time
- -4.4 pts
- vs US avg
- 55 min
- Delay when late
- 9,340
- Flights
Cancelled
1.3%
Best Month
Sep 2025 87%
Worst Month
Jul 2024 50%
Distance
281 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 152 | 46 | 6 | 1 | WN |
| Nov 2025 | 144 | 22 | 2 | 0 | WN |
| Oct 2025 | 149 | 29 | 0 | 0 | WN |
| Sep 2025 | 147 | 19 | 0 | 0 | WN |
| Aug 2025 | 148 | 26 | 0 | 1 | WN |
| Jul 2025 | 145 | 53 | 8 | 0 | WN |
| Jun 2025 | 141 | 49 | 1 | 0 | WN |
| May 2025 | 146 | 42 | 0 | 0 | WN |
| Apr 2025 | 141 | 30 | 0 | 0 | WN |
| Mar 2025 | 138 | 30 | 2 | 0 | WN |
| Feb 2025 | 112 | 24 | 2 | 0 | WN |
| Jan 2025 | 124 | 31 | 5 | 0 | WN |
| Dec 2024 | 141 | 22 | 0 | 0 | WN |
| Nov 2024 | 140 | 25 | 0 | 0 | WN |
| Oct 2024 | 146 | 33 | 2 | 0 | WN |
| Sep 2024 | 148 | 27 | 0 | 0 | WN |
| Aug 2024 | 148 | 58 | 0 | 1 | WN |
| Jul 2024 | 141 | 70 | 0 | 0 | WN |
| Jun 2024 | 135 | 59 | 1 | 0 | WN |
| May 2024 | 147 | 53 | 0 | 0 | WN |
| Apr 2024 | 142 | 39 | 0 | 0 | WN |
| Mar 2024 | 142 | 43 | 0 | 1 | WN |
| Feb 2024 | 119 | 32 | 0 | 0 | WN |
| Jan 2024 | 142 | 42 | 15 | 1 | WN |
Cancellation Rate
1.3%
44 of 3,378 flights
Diversion Rate
0.1%
5 of 3,378 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 →BUF - Buffalo
Full on-time, delay-cause, and seasonal performance for Buffalo, NY.
Destination airport →Compare the two airports
See BWI 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 BWI–BUF.
Routes with a similar on-time rate
What the Data Says About BWI to BUF
On-time performance on the BWI to BUF pairing (Baltimore to Buffalo) trails a chunk of the network: 74.6% of 9,340 tracked flights arrived on schedule, with a 55.2-minute average delay on the ones that ran late. The route spans about 281 miles across 1 carrier. Cancellations over the trailing 24 months hit 1.3% (44 of 3,378 flights), with 0.1% diverted.
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 87% on-time, while Jul 2024 came in at just 50% - a 37-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from BWI to BUF? ▼
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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.