Best Time to Fly CLT to STL: On-Time Stats by Hour & Airline
Charlotte Douglas International → St Louis Lambert International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 79.8% of Charlotte (CLT) to St. Louis (STL) flights arrived on time (1,834 scheduled flights). That is 2.2 points above the national average of 77.6%.
Among 3 airlines, PSA Airlines led with 84.7% on time and American Airlines was last with 79.2%.
Over 24 months, Wednesday was the most reliable day (84% on time) and July the worst month (70%).
The cancellation rate was 1.5% (US average 1.8%).
CLT to STL 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 |
|---|---|---|---|---|
| PSA Airlines | 84.7% | 70 min | 6.4% | 78 |
| Southwest Airlines | 81.8% | 65 min | 0.8% | 260 |
| American Airlines | 79.2% | 69 min | 1.4% | 1,496 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly CLT to STL
On-time arrival % by scheduled departure hour (local time), 3,870 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 89.7% | 0.8% | 478 |
| 8am–9am | 86.0% | 3.2% | 185 |
| 9am–10am | 81.8% | 0.0% | 33 |
| 10am–11am | Limited data | 27 | |
| 11am–12pm | 81.9% | 0.7% | 418 |
| 12pm–1pm | 85.7% | 0.9% | 319 |
| 1pm–2pm | 81.8% | 2.3% | 174 |
| 2pm–3pm | 76.0% | 1.3% | 149 |
| 3pm–4pm | 76.2% | 1.2% | 86 |
| 4pm–5pm | 71.5% | 1.0% | 482 |
| 5pm–6pm | 78.2% | 2.5% | 240 |
| 6pm–7pm | 70.2% | 1.0% | 671 |
| 7pm–8pm | Limited data | 28 | |
| 8pm–9pm | 58.1% | 2.2% | 89 |
| 9pm–10pm | 82.5% | 2.4% | 41 |
| 10pm–11pm | 73.9% | 3.1% | 450 |
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 STL
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) | 78.7% | -1.5 pts | 1.3% | 77 |
| Christmas & New Year (Dec 20 - Jan 3) | 78.2% | -2.0 pts | 0.0% | 165 |
| Summer peak (Jun 15 - Aug 15) | 68.5% | -11.7 pts | 1.3% | 694 |
| All other days | 80.2% | — | 1.6% | 2,934 |
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).