Houston (HOU) to St Louis (STL) flights
Southwest Airlines flies nonstop from William P. Hobby Airport to St. Louis Lambert International Airport, with about 36 flights a week in July 2026. The 687-mile flight takes about 1h 54m gate to gate.
- Distance
- 687 mi · 1,106 km
- Flight time
- 1h 54m
- Airlines
- 1
- Seats filled
- 68%
Airlines flying HOU to STL
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 36 | Boeing 737 MAX 8, Boeing 737-700 / MAX 7, Boeing 737-800 | 173,155 | 1h 54m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
HOU to STL flight schedule
9 flight numbers flew this route in August 2026, 2 of them almost daily. The first usually leaves at 5:30am and the last at 9:00pm. 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 2164Southwest Airlines | 5:30am | 7:30am | 12 | 92% |
| WN 2016Southwest Airlines | 6:40am | 8:40am | 4 | n/a |
| WN 2019Southwest Airlines | 7:20am | 9:20am | 28 | 96% |
| WN 2303Southwest Airlines | 11:05am | 1:05pm | 12 | 67% |
| WN 2022Southwest Airlines | 3:55pm | 5:55pm | 16 | 69% |
| WN 2144Southwest Airlines | 4:05pm | 6:05pm | 20 | 80% |
| WN 2697Southwest Airlines | 5:55pm | 7:55pm | 14 | 57% |
| WN 3204Southwest Airlines | 7:50pm | 9:50pm | 12 | 58% |
| WN 3992Southwest Airlines | 9:00pm | 11:00pm | 4 | n/a |
Is HOU to STL on time?
From September 2025 to August 2026, 80% of 1,567 flights arrived within 15 minutes of schedule and 0.4% were cancelled. Flights leaving around 5am were the most punctual (94%), those around 7pm the least (59%). Most delay time was caused by late-arriving aircraft (51%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 1,567 | 80% | 11 min | 0.4% |
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 |
|---|---|---|---|
| 5am to 6am | 178 | 94% | |
| 7am to 8am | 228 | 90% | |
| 8am to 9am | 74 | 97% | |
| 10am to 11am | 99 | 86% | |
| 11am to 12pm | 44 | 70% | |
| 12pm to 1pm | 69 | 78% | |
| 1pm to 2pm | 78 | 75% | |
| 2pm to 3pm | 91 | 79% | |
| 3pm to 4pm | 65 | 86% | |
| 4pm to 5pm | 120 | 62% | |
| 5pm to 6pm | 107 | 67% | |
| 6pm to 7pm | 68 | 85% | |
| 7pm to 8pm | 108 | 59% | |
| 8pm to 9pm | 86 | 75% | |
| 9pm to 10pm | 60 | 68% | |
| 10pm to 11pm | 53 | 72% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 129 | 14,734 | |
| September 2025 | 125 | 12,907 | |
| October 2025 | 123 | 14,302 | |
| November 2025 | 131 | 14,610 | |
| December 2025 | 139 | 14,590 | |
| January 2026 | 105 | 11,605 | |
| February 2026 | 107 | 10,852 | |
| March 2026 | 148 | 18,224 | |
| April 2026 | 133 | 13,572 | |
| May 2026 | 130 | 15,230 | |
| June 2026 | 135 | 15,849 | |
| July 2026 | 158 | 16,680 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.