Best Time to Fly CLT to ONT: On-Time Stats by Hour & Airline
Charlotte Douglas International → Ontario International
Data through July 2026 · Last updated October 18, 2026
327 flights were scheduled from Charlotte (CLT) to Ontario (ONT) in the last 12 months, and 77.1% of those that flew arrived on time, 0.5 points below the US average of 77.6%.
American Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (79% on time) and July the worst month (48%).
The cancellation rate was 1.2% (US average 1.8%).
CLT to ONT 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 | 77.1% | 56 min | 1.2% | 327 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly CLT to ONT
On-time arrival % by scheduled departure hour (local time), 650 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 11am–12pm | Limited data | 1 | |
| 1pm–2pm | Limited data | 2 | |
| 2pm–3pm | Limited data | 9 | |
| 4pm–5pm | Limited data | 3 | |
| 5pm–6pm | 90.9% | 0.0% | 33 |
| 6pm–7pm | 76.4% | 0.6% | 332 |
| 7pm–8pm | 73.6% | 1.0% | 195 |
| 8pm–9pm | 57.1% | 1.4% | 71 |
| 9pm–10pm | Limited data | 4 | |
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 ONT
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) | 80.0% | -0.2 pts | 0.0% | 30 |
| Summer peak (Jun 15 - Aug 15) | 51.6% | -28.6 pts | 1.6% | 124 |
| All other days | 80.2% | — | 0.6% | 484 |
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).