Charlotte (CLT) to St. Louis (STL): On-Time Performance
Data through July 2026
When you fly CLT to STL matters as much as anything else about the booking: the route swung from 86% on-time in September 2025 to just 59% in July 2024. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (86% vs 71%), which matters most in the rough months.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 17 min
- completed flights
- Cancelled
- 1.5%
- Flights/day
- 5.0
- last 12 months
- Duration
- 2h 2m
- scheduled
- Distance
- 575 mi
Best airline from CLT to STL
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| PSA Airlinesmost reliable | 83% | 16 min | 5.7% | 87 |
| Southwest Airlines | 78% | 15 min | 0.5% | 632 |
| American Airlines | 77% | 18 min | 1.6% | 3,333 |
Monthly on-time trend
Best time to fly from CLT to STL
Aim for departures around 7 a.m. (90% on-time); avoid 8 p.m. departures (56%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 71% | 23 min |
| Tuesday | 83% | 12 min |
| Wednesdaybest | 83% | 14 min |
| Thursday | 76% | 18 min |
| Friday | 74% | 21 min |
| Saturday | 77% | 15 min |
| Sunday | 76% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft55%
- Airline operations30%
- National airspace system9%
- Weather6%
Frequently asked questions
- How often are flights from CLT to STL delayed?
- 23% of CLT–STL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 17 minutes.
- Which airline is most reliable from CLT to STL?
- PSA Airlines has the best on-time record on this route at 83%, based on 87 flights. 3 airlines flew CLT–STL frequently enough to compare in this period.
- What is the best time of day to fly from CLT to STL?
- Departures around 7 a.m. have the best record (90% on-time), while departures around 8 p.m. have the worst (56%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from CLT to STL?
- The scheduled CLT–STL flight time averages 2h 2m over 575 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are CLT to STL flights cancelled?
- 1.5% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from CLT to STL?
- July 2024 was the roughest month in this dataset, with only 59% of arrivals on time. The best was September 2025 at 86%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 4,052 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.