Route Reliability
St. Louis → Charleston
STL–CHS · 706 miles · St. Louis Lambert International Airport to Charleston International Airport
- 80%
- Arrive within 15 minutes
- 5 min
- Average arrival delay
- 0%
- Cancelled
- 160
- Flights in the data
Data through May 2026.
Southwest Airlines is the only airline in this data on this route, arriving on time 80% of the time across 160 flights. No comparison to make.
What the data says
The 6–9 AM departure wins.
STL–CHS flights departing between 6–9 AM arrived on time 87% of the time, versus 77% between 9 AM–12 PM.
Thursdays have been rough.
STL–CHS flights arrived on time 94% of the time on Tuesdays and just 72% on Thursdays. That gap is worth planning around.
It basically never cancels.
Out of 160 scheduled flights, only 0.0% were cancelled.
Trending in the right direction.
STL–CHS flights arrived on time 88% of the time over the last three months in the data, compared with 76% in the three months before that.
Flights on this route
The breakdown
- Mon80%(25 flights)
- Tue94%(17 flights)
- Wed94%(17 flights)
- Thu72%(25 flights)
- Fri76%(25 flights)
- Sat82%(22 flights)
- Sun72%(29 flights)
- 6–9 AM87%(31 flights)
- 9 AM–12 PM77%(44 flights)
- 12–3 PM77%(62 flights)
- 3–6 PM83%(23 flights)
Jun 77% → May 77% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 77% | 30 |
| July 2025 | 74% | 31 |
| August 2025 | 78% | 18 |
| September 2025 | 94% | 17 |
| April 2026 | 92% | 25 |
| May 2026 | 77% | 31 |
Keep nerding
Based on 160 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.