Houston (HOU) to Seattle (SEA) flights
Southwest Airlines flies nonstop from William P. Hobby Airport to Seattle-Tacoma International Airport, with about 7 flights a week in July 2026. The 1,894-mile flight takes about 4h 35m gate to gate.
- Distance
- 1,894 mi · 3,048 km
- Flight time
- 4h 35m
- Airlines
- 1
- Seats filled
- 88%
Airlines flying HOU to SEA
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 7 | Boeing 737-800, Boeing 737 MAX 8, Boeing 737-700 / MAX 7 | 17,514 | 4h 35m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
HOU to SEA flight schedule
5 flight numbers flew this route in August 2026. The first usually leaves at 9:30am and the last at 8:55pm. 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 148Southwest Airlines | 9:30am | 12:15pm | 6 | n/a |
| WN 242Southwest Airlines | 9:30am | 12:15pm | 6 | n/a |
| WN 2690Southwest Airlines | 9:30am | 12:15pm | 8 | n/a |
| WN 1591Southwest Airlines | 3:05pm | 5:45pm | 4 | n/a |
| WN 976Southwest Airlines | 8:55pm | 11:35pm | 4 | n/a |
Is HOU to SEA on time?
From September 2025 to August 2026, 64% of 120 flights arrived within 15 minutes of schedule and 0% were cancelled. Flights leaving around 10am were the most punctual (90%), those around 2pm the least (48%). Most delay time was caused by late-arriving aircraft (54%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 120 | 64% | 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 |
|---|---|---|---|
| 9am to 10am | 20 | 75% | |
| 10am to 11am | 10 | 90% | |
| 12pm to 1pm | 14 | 71% | |
| 2pm to 3pm | 27 | 48% | |
| 7pm to 8pm | 16 | 63% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 31 | 4,467 | |
| September 2025 | 30 | 3,656 | |
| October 2025 | 1 | 114 | |
| June 2026 | 27 | 4,182 | |
| July 2026 | 31 | 5,095 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.