CHS to STL flight delays & on-time performance
Nonstop flights from Charleston International Airport to St. Louis Lambert International Airport · 706 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at CHS or STL right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Charleston (CHS) to St. Louis (STL) arrived on time 80% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.6% were cancelled, and 8% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 11am did best (92% on time); around 4pm did worst (67%).
- Tuesday was the most reliable day to fly (94% on time) and Sunday the least (68%).
- The largest source of delay minutes was late-arriving aircraft (72%).
Which airline is most on time from CHS to STL?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Southwest Airlines | 80% | 0.6% | 15 min | 7.6% | 159 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 11am92%26 flights
- 1pm77%35 flights
- 2pm83%24 flights
- 3pm88%24 flights
- 4pm67%36 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday75%4.0% cancelled
- Tuesday94%0.0% cancelled
- Wednesday94%0.0% cancelled
- Thursday76%0.0% cancelled
- Friday72%0.0% cancelled
- Saturday91%0.0% cancelled
- Sunday68%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft72%
- Airline (crew, maintenance, cleaning, fueling)13%
- Extreme weather8%
- Air traffic control & airport congestion7%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Air traffic control & airport congestion0%
- Security0%
CHS to STL: common questions
- How often are CHS to STL flights on time?
- 80% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Charleston to St. Louis cancelled?
- 0.6% of scheduled flights were cancelled (1 of 159).
- How long are typical delays?
- Across all flights the average arrival delay was 15 min (early arrivals count as zero). Flights that were late arrived 69 min behind schedule on average, and 7.6% of flights were an hour or more late.
- How long is taxi time at CHS?
- Flights on this route spent 13 min taxiing from the gate to takeoff on average.
Related routes
Return trip: STL to CHS — 79% on time
More flights from Charleston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: CHS → STL, nonstop flights by US airlines that report to the DOT. How we calculate this.