Seattle (SEA) to Houston (HOU): On-Time Performance
Data through May 2026
Seattle (SEA) to Houston (HOU) is a thinner route than most in this dataset — 119 departures over the past year, roughly 2 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 71% arrived on time, noticeably below the national average of 78%.
- On-time
- 71%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 0.0%
- Flights/day
- 0.33
- last 12 months
- Duration
- 4h 18m
- scheduled
- Distance
- 1,894 mi
Best time to fly from SEA to HOU
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 7 min |
| Tuesday | 77% | 14 min |
| Wednesday | 71% | 11 min |
| Thursday | 71% | 11 min |
| Friday | 59% | 37 min |
| Saturdaybest | 82% | 6 min |
| Sunday | 65% | 47 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft68%
- Airline operations23%
- National airspace system10%
Frequently asked questions
- How often are flights from SEA to HOU delayed?
- 29% of SEA–HOU flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 19 minutes.
- How long is the flight from SEA to HOU?
- The scheduled SEA–HOU flight time averages 4h 18m over 1,894 miles. Actual arrival times vary — flights on this route land 15+ minutes late 29% of the time.
- How often are SEA to HOU flights cancelled?
- 0% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
Explore related pages
More routes from SEA
Based on 119 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.