Best Time to Fly STL to CHS: On-Time Stats by Hour & Airline
St Louis Lambert International → Charleston AFB/International
Data through July 2026 · Last updated October 18, 2026
160 flights were scheduled from St. Louis (STL) to Charleston (CHS) in the last 12 months, and 79.4% of those that flew arrived on time, 1.8 points above the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
April has been the best month (92% on time) and Friday the weakest day of the week (74%).
0.0% of flights were cancelled, versus 1.8% nationally.
STL to CHS 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 |
|---|---|---|---|---|
| Southwest Airlines | 79.4% | 47 min | 0.0% | 160 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly STL to CHS
On-time arrival % by scheduled departure hour (local time), 298 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 87.1% | 0.0% | 31 |
| 8am–9am | Limited data | 8 | |
| 9am–10am | Limited data | 4 | |
| 10am–11am | Limited data | 1 | |
| 11am–12pm | 80.2% | 0.0% | 86 |
| 12pm–1pm | Limited data | 28 | |
| 1pm–2pm | Limited data | 16 | |
| 2pm–3pm | 75.0% | 0.0% | 84 |
| 3pm–4pm | Limited data | 17 | |
| 4pm–5pm | Limited data | 9 | |
| 5pm–6pm | Limited data | 14 | |
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 CHS
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Summer peak (Jun 15 - Aug 15) | 74.8% | -11.1 pts | 0.0% | 107 |
| All other days | 85.9% | — | 0.0% | 191 |
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).