Best Time to Fly ONT to CLT: On-Time Stats by Hour & Airline
Ontario International → Charlotte Douglas International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 86.7% of Ontario (ONT) to Charlotte (CLT) flights arrived on time (327 scheduled flights). That is 9.0 points above the national average of 77.6%.
American Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Monday was the most reliable day (90% on time) and June the worst month (72%).
The cancellation rate was 1.2% (US average 1.8%).
ONT to CLT 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 | 86.7% | 67 min | 1.2% | 327 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ONT to CLT
On-time arrival % by scheduled departure hour (local time), 650 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 15 | |
| 9pm–10pm | Limited data | 2 | |
| 10pm–11pm | 84.4% | 0.8% | 595 |
| 11pm–12am | 94.7% | 0.0% | 38 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ONT to CLT
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) | Limited data | 12 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 29 | ||
| Summer peak (Jun 15 - Aug 15) | 77.9% | -8.4 pts | 1.6% | 124 |
| All other days | 86.3% | — | 0.6% | 485 |
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).