San Jose (SJC) to Houston (IAH): On-Time Performance
Data through May 2026
San Jose (SJC) to Houston (IAH) is a thinner route than most in this dataset — 215 departures over the past year, roughly 4 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 78% arrived on time.
- On-time
- 78%
- arrived <15 min late
- Avg delay
- 17 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 0.59
- last 12 months
- Duration
- 3h 49m
- scheduled
- Distance
- 1,608 mi
Monthly on-time trend
Best time to fly from SJC to IAH
Aim for departures around 7 a.m. (95% on-time); avoid 12 p.m. departures (67%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 75% | 18 min |
| Tuesday | 80% | 13 min |
| Wednesdaybest | 83% | 12 min |
| Thursday | 81% | 31 min |
| Friday | 79% | 18 min |
| Saturday | 75% | 13 min |
| Sunday | 75% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft38%
- Airline operations33%
- National airspace system29%
Frequently asked questions
- How often are flights from SJC to IAH delayed?
- 22% of SJC–IAH 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 17 minutes.
- What is the best time of day to fly from SJC to IAH?
- Departures around 7 a.m. have the best record (95% on-time), while departures around 12 p.m. have the worst (67%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SJC to IAH?
- The scheduled SJC–IAH flight time averages 3h 49m over 1,608 miles. Actual arrival times vary — flights on this route land 15+ minutes late 22% of the time.
- How often are SJC to IAH flights cancelled?
- 1.3% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from SJC to IAH?
- June 2025 was the roughest month in this dataset, with only 55% of arrivals on time. The best was November 2024 at 100%. If your dates are flexible, that 45-point gap is worth planning around.
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Based on 467 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.