Best Time to Fly STL to CLT: On-Time Stats by Hour & Airline
St Louis Lambert International → Charlotte Douglas International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 83.8% of St. Louis (STL) to Charlotte (CLT) flights arrived on time (1,835 scheduled flights). That is 6.2 points above the national average of 77.6%.
Among 3 airlines, American Airlines led with 85.5% on time and Southwest Airlines was last with 74.4%.
Over 24 months, Tuesday was the most reliable day (87% on time) and June the worst month (75%).
The cancellation rate was 1.4% (US average 1.8%).
STL 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 | 85.5% | 107 min | 1.3% | 1,498 |
| PSA Airlines | 83.6% | 185 min | 6.4% | 78 |
| Southwest Airlines | 74.4% | 52 min | 0.4% | 259 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly STL to CLT
On-time arrival % by scheduled departure hour (local time), 3,867 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.3% | 1.9% | 469 |
| 6am–7am | 92.5% | 4.5% | 112 |
| 7am–8am | 87.5% | 1.8% | 603 |
| 8am–9am | 88.7% | 2.1% | 144 |
| 9am–10am | 89.0% | 0.7% | 568 |
| 10am–11am | 83.9% | 4.3% | 117 |
| 11am–12pm | 89.7% | 0.0% | 78 |
| 12pm–1pm | 76.1% | 0.0% | 235 |
| 1pm–2pm | 79.0% | 0.5% | 196 |
| 2pm–3pm | 80.2% | 1.5% | 329 |
| 3pm–4pm | 75.5% | 1.2% | 248 |
| 4pm–5pm | 65.3% | 0.8% | 241 |
| 5pm–6pm | 73.9% | 2.9% | 138 |
| 6pm–7pm | 73.9% | 0.8% | 358 |
| 7pm–8pm | 77.4% | 0.0% | 31 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on STL 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) | 72.4% | -12.8 pts | 1.3% | 77 |
| Christmas & New Year (Dec 20 - Jan 3) | 81.1% | -4.1 pts | 0.0% | 164 |
| Summer peak (Jun 15 - Aug 15) | 75.0% | -10.2 pts | 1.2% | 690 |
| All other days | 85.2% | — | 1.6% | 2,936 |
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).