Airports › Buffalo (BUF) › September 2025
Airport month · September 2025
Buffalo Niagara International in September 2025
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In September 2025, reporting carriers scheduled 1,682 domestic departures from Buffalo Niagara International (BUF). 85.1% left less than 15 minutes late and 85.3% reached their destination on time; 0.5% were cancelled.
Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so BUF departures were 2.0 points above the national departure figure.
A year earlier, in September 2024, the airport had 1,980 departures with 88.1% leaving on time: a change of −3.0 points, with flights down 15%.
Flights arriving at BUF that month were on time 81.8% of the time (1,681 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 41%, late-arriving aircraft 33% and national aviation system 25%.
- On time 85.3%
- Arrived 15+ minutes late 14.0%
- Cancelled 0.5%
- Diverted 0.1%
September 2025 against a year earlier, the airport's year and the nation
| Measure | Sep 2025 | Sep 2024 | BUF, 12 months to Jul 2026 | All reported flights, Sep 2025 |
|---|---|---|---|---|
| Departed on time | 85.1% | 88.1% | 75.6% | 83.1% |
| Arrived on time | 85.3% | 87.5% | 75.5% | 82.8% |
| Cancelled | 0.5% | 0.3% | 2.6% | 0.5% |
| Average departure delay (late minutes only) | 12.6 min | 8.0 min | 18.8 min | 12.2 min |
| Scheduled departures a day | 56 | 66 | 57 | 18,748 |
| Scheduled departures | 1,682 | 1,980 | 20,726 | 562,439 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| WN Southwest Airlines | 466 | 28% | 88.6% | -1.6 min | 0.0% |
| B6 JetBlue Airways | 272 | 16% | 82.7% | 4.0 min | 0.7% |
| YX Republic Airline | 254 | 15% | 84.6% | 1.6 min | 1.2% |
| AA American Airlines | 226 | 13% | 85.8% | 12.0 min | 1.3% |
| DL Delta Air Lines | 144 | 9% | 97.9% | -11.8 min | 0.0% |
| UA United Airlines | 124 | 7% | 79.8% | 12.5 min | 0.0% |
| OH PSA Airlines | 74 | 4% | 81.1% | 5.1 min | 0.0% |
| F9 Frontier Airlines | 68 | 4% | 76.5% | 12.7 min | 0.0% |
| MQ Envoy Air | 30 | 2% | 46.7% | 28.5 min | 3.3% |
| OO SkyWest Airlines | 24 | 1% | 91.7% | -7.9 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| BUF–LGA | Buffalo to New York | 190 | 87.9% | -0.7 min | 1.6% |
| BUF–ORD | Buffalo to Chicago | 179 | 76.0% | 21.5 min | 0.6% |
| BUF–BWI | Buffalo to Baltimore | 147 | 93.2% | -5.3 min | 0.0% |
| BUF–ATL | Buffalo to Atlanta | 124 | 96.0% | -12.2 min | 0.0% |
| BUF–JFK | Buffalo to New York | 120 | 86.7% | 2.0 min | 0.8% |
| BUF–MCO | Buffalo to Orlando | 118 | 82.2% | 6.6 min | 0.0% |
| BUF–DCA | Buffalo to Washington | 116 | 75.9% | 9.1 min | 0.0% |
| BUF–CLT | Buffalo to Charlotte | 99 | 87.9% | 11.7 min | 1.0% |
| BUF–BOS | Buffalo to Boston | 88 | 70.5% | 13.5 min | 1.1% |
| BUF–MDW | Buffalo to Chicago | 82 | 89.0% | -0.5 min | 0.0% |
| BUF–DEN | Buffalo to Denver | 77 | 75.3% | 7.2 min | 0.0% |
| BUF–TPA | Buffalo to Tampa | 65 | 92.3% | -1.9 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left BUF on time in September 2025?
85.1% of 1,682 scheduled domestic departures left less than 15 minutes late, and 85.3% reached their destination on time. The national figures that month were 83.1% and 82.8%.
How does that compare with a year earlier?
In September 2024, 88.1% of 1,980 departures left on time and 0.3% were cancelled, against 85.1% and 0.5% in September 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for BUF · methodology · corrections.