Buffalo Niagara International (BUF) Delays and On-Time Departures
Buffalo, NY · ranked 248th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, Buffalo (BUF) had 20,726 scheduled departures and 77.6% of them left on time (US average 77.4%).
That ranks 248th of 333 US airports tracked on this site, with 2.6% of departures cancelled.
United Airlines was the most punctual airline here, with 84.2% of departures on time.
September has been the best month (87% on time) and Sunday the weakest day of the week (76%).
Best time of day to fly out of Buffalo (BUF)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 91.4% | 2.6% | 2,039 |
| 6am–7am | 90.2% | 1.9% | 7,119 |
| 7am–8am | 91.6% | 1.4% | 3,526 |
| 8am–9am | 89.0% | 1.3% | 2,086 |
| 9am–10am | 87.0% | 1.4% | 1,227 |
| 10am–11am | 87.4% | 1.5% | 2,400 |
| 11am–12pm | 80.9% | 1.5% | 3,006 |
| 12pm–1pm | 76.5% | 1.8% | 3,251 |
| 1pm–2pm | 76.7% | 1.7% | 1,981 |
| 2pm–3pm | 73.4% | 3.1% | 1,522 |
| 3pm–4pm | 70.6% | 2.3% | 1,797 |
| 4pm–5pm | 66.9% | 2.3% | 2,316 |
| 5pm–6pm | 66.9% | 3.5% | 3,787 |
| 6pm–7pm | 68.8% | 3.2% | 2,438 |
| 7pm–8pm | 67.3% | 3.4% | 2,565 |
| 8pm–9pm | 59.5% | 2.3% | 782 |
| 9pm–10pm | 55.3% | 2.9% | 244 |
| 10pm–11pm | 46.1% | 2.5% | 40 |
Airlines at BUF ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| United Airlines | 84.2% | 79.4% | 0.9% | 981 |
| Republic Airways | 81.8% | 80.3% | 4.2% | 3,380 |
| Delta Air Lines | 79.7% | 82.8% | 2.1% | 1,786 |
| JetBlue | 78.9% | 76.1% | 3.8% | 3,439 |
| American Airlines | 78.8% | 78.8% | 2.2% | 2,238 |
| Southwest Airlines | 75.6% | 79.5% | 1.1% | 5,489 |
| SkyWest Airlines | 74.6% | 73.4% | 3.1% | 1,136 |
| Envoy Air | 74.4% | 68.3% | 4.4% | 636 |
| Frontier Airlines | 68.9% | 69.4% | 2.1% | 827 |
| PSA Airlines | 68.9% | 65.8% | 5.2% | 814 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of BUF
On-time departures by day, 24 months.
Best month to fly out of BUF
On-time departures by month, 24 months.
Holiday travel at Buffalo (BUF)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 80.6% | -1.1 pts | 1.6% | 811 |
| Christmas & New Year (Dec 20 - Jan 3) | 68.4% | -13.3 pts | 4.6% | 1,543 |
| Summer peak (Jun 15 - Aug 15) | 72.2% | -9.6 pts | 4.1% | 7,761 |
| All other days | 81.7% | — | 1.6% | 32,011 |
Monthly on-time departure trend at BUF
On-time departure % each month, with the 12-month US average for reference.
Routes from Buffalo (BUF)
Every route from BUF with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| BUF → Chicago (ORD) | 74.7% | 3.2% | 2,199 |
| BUF → Orlando (MCO) | 75.8% | 1.4% | 1,792 |
| BUF → New York (LGA) | 78.2% | 4.8% | 1,758 |
| BUF → Baltimore (BWI) | 87.0% | 1.4% | 1,750 |
| BUF → Atlanta (ATL) | 80.1% | 2.2% | 1,520 |
| BUF → Boston (BOS) | 76.4% | 2.9% | 1,295 |
| BUF → New York (JFK) | 77.3% | 5.6% | 1,217 |
| BUF → Detroit (DTW) | 80.9% | 1.7% | 1,207 |
| BUF → Charlotte (CLT) | 78.9% | 1.7% | 1,165 |
| BUF → Washington (DCA) | 65.7% | 4.9% | 1,134 |
| BUF → Chicago (MDW) | 76.8% | 1.3% | 824 |
| BUF → Tampa (TPA) | 79.9% | 0.6% | 732 |
| BUF → Denver (DEN) | 74.9% | 0.2% | 586 |
| BUF → Dallas/Fort Worth (DFW) | 73.7% | 2.9% | 578 |
| BUF → Fort Lauderdale (FLL) | 75.5% | 2.4% | 553 |
| BUF → Newark (EWR) | 87.8% | 5.0% | 482 |
| BUF → Nashville (BNA) | 78.2% | 0.8% | 370 |
| BUF → Las Vegas (LAS) | 81.9% | 0.7% | 302 |
| BUF → Philadelphia (PHL) | 81.9% | 3.4% | 263 |
| BUF → Phoenix (PHX) | 79.7% | 0.5% | 199 |