Seattle (SEA) to Houston (HOU) flights
Southwest Airlines flies nonstop from Seattle-Tacoma International Airport to William P. Hobby Airport, with about 7 flights a week in July 2026. The 1,894-mile flight takes about 4h 11m gate to gate.
- Distance
- 1,894 mi · 3,048 km
- Flight time
- 4h 11m
- Airlines
- 1
- Seats filled
- 89%
Airlines flying SEA to HOU
| 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 | 17,064 | 4h 11m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SEA to HOU flight schedule
2 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 8:55am and the last at 11:25am. 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 3744Southwest Airlines | 8:55am | 3:10pm | 8 | n/a |
| WN 4609Southwest Airlines | 11:25am | 5:45pm | 20 | 30% |
Is SEA to HOU on time?
From September 2025 to August 2026, 58% of 120 flights arrived within 15 minutes of schedule and 0% were cancelled. Flights leaving around 10pm were the most punctual (94%), those around 11am the least (28%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (50%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 120 | 58% | 20 min | 0% |
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 |
|---|---|---|---|
| 8am to 9am | 24 | 63% | |
| 10am to 11am | 17 | 59% | |
| 11am to 12pm | 43 | 28% | |
| 10pm to 11pm | 31 | 94% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 31 | 4,267 | |
| September 2025 | 30 | 3,164 | |
| October 2025 | 1 | 66 | |
| June 2026 | 27 | 4,391 | |
| July 2026 | 31 | 5,176 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.