Charleston (CHS) to St Louis (STL) flights
Southwest Airlines flies nonstop from Charleston International Airport to St. Louis Lambert International Airport, with about 7 flights a week in July 2026. The 706-mile flight takes about 2h 2m gate to gate.
- Distance
- 706 mi · 1,136 km
- Flight time
- 2h 2m
- Airlines
- 1
- Seats filled
- 68%
Airlines flying CHS to STL
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 7 | Boeing 737-700 / MAX 7, Boeing 737-800, Boeing 737 MAX 8 | 17,173 | 2h 2m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
CHS to STL flight schedule
3 flight numbers flew this route in August 2026. The first usually leaves at 6:45am and the last at 5:20pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| WN 873Southwest Airlines | 6:45am | 7:45am | 4 | n/a |
| WN 1343Southwest Airlines | 2:05pm | 3:15pm | 4 | n/a |
| WN 1695Southwest Airlines | 5:20pm | 6:25pm | 12 | 67% |
Is CHS to STL on time?
From September 2025 to August 2026, 79% of 164 flights arrived within 15 minutes of schedule and 0.6% were cancelled. Flights leaving around 11am were the most punctual (100%), those around 4pm the least (65%). Most delay time was caused by late-arriving aircraft (75%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 164 | 79% | 13 min | 0.6% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 11am to 12pm | 14 | 100% | |
| 1pm to 2pm | 33 | 79% | |
| 2pm to 3pm | 27 | 81% | |
| 3pm to 4pm | 24 | 88% | |
| 4pm to 5pm | 37 | 65% | |
| 5pm to 6pm | 20 | 70% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 18 | 2,102 | |
| September 2025 | 17 | 2,058 | |
| October 2025 | 4 | 554 | |
| March 2026 | 5 | 498 | |
| April 2026 | 25 | 2,526 | |
| May 2026 | 29 | 3,027 | |
| June 2026 | 30 | 3,243 | |
| July 2026 | 31 | 3,165 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.