St Louis (STL) to Raleigh/Durham (RDU) flights
Southwest Airlines flies nonstop from St. Louis Lambert International Airport to Raleigh-Durham International Airport, with about 14 flights a week in July 2026. The 668-mile flight takes about 1h 43m gate to gate.
- Distance
- 668 mi · 1,075 km
- Flight time
- 1h 43m
- Airlines
- 1
- Seats filled
- 68%
Airlines flying STL to RDU
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 14 | Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800 | 71,197 | 1h 43m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
STL to RDU flight schedule
6 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 9:00am and the last at 6:50pm. 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 943Southwest Airlines | 9:00am | 11:50am | 4 | n/a |
| WN 784Southwest Airlines | 10:05am | 12:55pm | 4 | n/a |
| WN 2545Southwest Airlines | 10:10am | 1:00pm | 12 | 92% |
| WN 4929Southwest Airlines | 10:15am | 1:05pm | 8 | n/a |
| WN 1534Southwest Airlines | 6:40pm | 9:30pm | 8 | n/a |
| WN 3883Southwest Airlines | 6:50pm | 9:40pm | 20 | 35% |
Is STL to RDU on time?
From September 2025 to August 2026, 79% of 664 flights arrived within 15 minutes of schedule and 0.2% were cancelled. Flights leaving around 7am were the most punctual (95%), those around 8pm the least (56%). Most delay time was caused by late-arriving aircraft (68%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 664 | 79% | 13 min | 0.2% |
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 |
|---|---|---|---|
| 7am to 8am | 39 | 95% | |
| 8am to 9am | 115 | 94% | |
| 9am to 10am | 35 | 89% | |
| 10am to 11am | 141 | 92% | |
| 4pm to 5pm | 17 | 71% | |
| 6pm to 7pm | 84 | 73% | |
| 7pm to 8pm | 127 | 66% | |
| 8pm to 9pm | 75 | 56% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 54 | 6,496 | |
| September 2025 | 52 | 6,272 | |
| October 2025 | 58 | 6,764 | |
| November 2025 | 58 | 6,057 | |
| December 2025 | 60 | 6,502 | |
| January 2026 | 31 | 2,734 | |
| February 2026 | 35 | 3,185 | |
| March 2026 | 60 | 5,934 | |
| April 2026 | 63 | 6,817 | |
| May 2026 | 66 | 6,956 | |
| June 2026 | 61 | 6,732 | |
| July 2026 | 62 | 7,091 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.