Route profile
IAH→SJC
Flight reliability, delays and best times to fly from Houston to San Jose. · 1,608 miles
Right now
Current conditions at both ends of this route.
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Airport conditions describe the airfield, not any individual flight. An airport operating normally is not a guarantee that a specific flight will depart on time.
Route reliability
July 2023 – June 2026
Better than 51% of comparable major US routes (4,577 compared)
Calculated from 810 flights. How this is calculated
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – June 2026
Airlines on this route
Performance by the carrier that actually operated the flight.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| United Airlines | 810 | 79.7% | 0.74% | -7 min | 8.8% |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Carriers with fewer than 200 flights on this route are not listed.
Other ways to fly Houston to San Francisco
Airport pairs serving the same journey, grouped by the DOT's own city-market definition. They do not perform the same way.
HOU → SJC is the most reliable pairing for this journey at 82.0% on time, against 77.3% for IAH → SFO.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Grouped by DOT city market, which places Newark with the New York airports and Baltimore with the Washington ones.
Historical trend
On-time arrival rate by month.
Over the most recent 12 months (2025-05 to 2026-06), on-time arrivals averaged 84.0% against 70.4% in the 12 months before — improving by 13.6 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026
Data and methodology
All figures on this page are calculated by FlyerIntel from 810 IAH → SJC flight records published by the US DOT Bureau of Transportation Statistics, covering July 2023 – June 2026. A flight is counted as delayed when it arrives 15 or more minutes after its scheduled arrival time, following BTS methodology. Cancelled and diverted flights have no arrival time and are excluded from on-time rates rather than counted as late.