Best Time to Fly CLT to BUF: On-Time Stats by Hour & Airline
Charlotte Douglas International → Buffalo Niagara International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 72.7% of Charlotte (CLT) to Buffalo (BUF) flights arrived on time (1,165 scheduled flights). That is 4.9 points below the national average of 77.6%.
American Airlines was the only reporting airline with regular flights on this route.
September has been the best month (80% on time) and Thursday the weakest day of the week (68%).
1.6% of flights were cancelled, versus 1.8% nationally.
CLT to BUF on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| American Airlines | 72.7% | 66 min | 1.6% | 1,164 |
| Southwest Airlines | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly CLT to BUF
On-time arrival % by scheduled departure hour (local time), 2,402 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 86.7% | 0.8% | 129 |
| 8am–9am | 82.2% | 0.0% | 73 |
| 9am–10am | 88.8% | 0.4% | 241 |
| 10am–11am | 88.9% | 4.1% | 122 |
| 11am–12pm | 82.0% | 0.9% | 342 |
| 12pm–1pm | Limited data | 25 | |
| 1pm–2pm | 60.6% | 0.0% | 33 |
| 2pm–3pm | Limited data | 13 | |
| 3pm–4pm | 56.6% | 1.9% | 54 |
| 4pm–5pm | 63.3% | 1.6% | 554 |
| 5pm–6pm | 61.7% | 0.0% | 120 |
| 6pm–7pm | Limited data | 6 | |
| 7pm–8pm | 72.9% | 0.0% | 48 |
| 8pm–9pm | 69.0% | 0.0% | 58 |
| 9pm–10pm | 72.1% | 3.5% | 115 |
| 10pm–11pm | 68.4% | 2.9% | 443 |
| 11pm–12am | Limited data | 26 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on CLT to BUF
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 73.2% | -2.1 pts | 0.0% | 41 |
| Christmas & New Year (Dec 20 - Jan 3) | 63.4% | -11.9 pts | 2.4% | 84 |
| Summer peak (Jun 15 - Aug 15) | 65.9% | -9.4 pts | 2.4% | 454 |
| All other days | 75.3% | — | 1.4% | 1,823 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).