Airports › Buffalo (BUF) › June 2026
Airport month · June 2026
Buffalo Niagara International in June 2026
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 June 2026, reporting carriers scheduled 1,865 domestic departures from Buffalo Niagara International (BUF). 74.6% left less than 15 minutes late and 76.9% reached their destination on time; 2.8% were cancelled.
Nationally that month, 72.2% of flights departed on time and 72.8% arrived on time, so BUF departures were 2.4 points above the national departure figure.
A year earlier, in June 2025, the airport had 1,771 departures with 73.0% leaving on time: a change of +1.6 points, with flights up 5%.
Flights arriving at BUF that month were on time 72.1% of the time (1,862 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 46%, national aviation system 27% and air carrier 25%.
- On time 76.9%
- Arrived 15+ minutes late 20.0%
- Cancelled 2.8%
- Diverted 0.2%
June 2026 against a year earlier, the airport's year and the nation
| Measure | Jun 2026 | Jun 2025 | BUF, 12 months to Jul 2026 | All reported flights, Jun 2026 |
|---|---|---|---|---|
| Departed on time | 74.6% | 73.0% | 75.6% | 72.2% |
| Arrived on time | 76.9% | 73.9% | 75.5% | 72.8% |
| Cancelled | 2.8% | 3.0% | 2.6% | 1.6% |
| Average departure delay (late minutes only) | 17.7 min | 22.0 min | 18.8 min | 20.6 min |
| Scheduled departures a day | 62 | 59 | 57 | 20,253 |
| Scheduled departures | 1,865 | 1,771 | 20,726 | 607,577 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| WN Southwest Airlines | 404 | 22% | 73.8% | 8.8 min | 0.7% |
| B6 JetBlue Airways | 339 | 18% | 77.9% | 2.2 min | 2.7% |
| YX Republic Airline | 334 | 18% | 83.2% | -3.8 min | 3.9% |
| AA American Airlines | 209 | 11% | 77.0% | 5.3 min | 2.4% |
| DL Delta Air Lines | 167 | 9% | 85.0% | 0.8 min | 2.4% |
| OO SkyWest Airlines | 156 | 8% | 80.1% | 4.2 min | 2.6% |
| UA United Airlines | 97 | 5% | 78.4% | 14.3 min | 2.1% |
| OH PSA Airlines | 86 | 5% | 54.7% | 41.9 min | 14.0% |
| F9 Frontier Airlines | 66 | 4% | 60.6% | 29.4 min | 1.5% |
| MQ Envoy Air | 7 | 0% | 57.1% | -1.1 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| BUF–ORD | Buffalo to Chicago | 209 | 79.9% | 6.0 min | 3.8% |
| BUF–BOS | Buffalo to Boston | 169 | 78.7% | 0.2 min | 3.6% |
| BUF–BWI | Buffalo to Baltimore | 150 | 84.7% | -0.6 min | 0.7% |
| BUF–ATL | Buffalo to Atlanta | 141 | 80.1% | 2.8 min | 2.1% |
| BUF–DTW | Buffalo to Detroit | 135 | 84.4% | 5.1 min | 1.5% |
| BUF–JFK | Buffalo to New York | 118 | 72.0% | 7.0 min | 4.2% |
| BUF–LGA | Buffalo to New York | 118 | 80.5% | 0.4 min | 5.1% |
| BUF–MCO | Buffalo to Orlando | 116 | 80.2% | 7.9 min | 0.0% |
| BUF–DCA | Buffalo to Washington | 90 | 53.3% | 40.6 min | 13.3% |
| BUF–MDW | Buffalo to Chicago | 90 | 73.3% | 16.9 min | 2.2% |
| BUF–CLT | Buffalo to Charlotte | 89 | 82.0% | 1.1 min | 0.0% |
| BUF–EWR | Buffalo to Newark | 74 | 82.4% | -2.9 min | 6.8% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left BUF on time in June 2026?
74.6% of 1,865 scheduled domestic departures left less than 15 minutes late, and 76.9% reached their destination on time. The national figures that month were 72.2% and 72.8%.
How does that compare with a year earlier?
In June 2025, 73.0% of 1,771 departures left on time and 3.0% were cancelled, against 74.6% and 2.8% in June 2026.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for June 2026; 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.