Route Reliability
Charleston → St. Louis
CHS–STL · 706 miles · Charleston International Airport to St. Louis Lambert International Airport
- 82%
- Arrive within 15 minutes
- 5 min
- Average arrival delay
- 0.6%
- Cancelled
- 159
- Flights in the data
Data through May 2026.
Southwest Airlines is the only airline in this data on this route, arriving on time 82% of the time across 159 flights. No comparison to make.
What the data says
Morning flights do better here.
CHS–STL flights departing between 9 AM–12 PM arrived on time 94% of the time, versus 75% between 6–9 PM.
Sunday scaries are real for this one.
CHS–STL flights arrived on time 96% of the time on Saturdays and just 72% on Sundays. That gap is worth planning around.
Trending in the right direction.
CHS–STL flights arrived on time 92% 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
- Mon79%(24 flights)
- Tue88%(17 flights)
- Wed82%(17 flights)
- Thu76%(25 flights)
- Fri88%(24 flights)
- Sat96%(22 flights)
- Sun72%(29 flights)
- 9 AM–12 PM94%(34 flights)
- 12–3 PM77%(47 flights)
- 3–6 PM82%(61 flights)
- 6–9 PM75%(16 flights)
Jun 73% → May 79% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 73% | 30 |
| July 2025 | 77% | 31 |
| August 2025 | 78% | 18 |
| September 2025 | 100% | 17 |
| April 2026 | 96% | 25 |
| May 2026 | 79% | 29 |
Keep nerding
Based on 159 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.