SJC to IAH flight delays & on-time performance
Nonstop flights from Mineta San Jose International Airport to George Bush Intercontinental Airport · 1,608 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SJC or IAH right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from San Jose (SJC) to Houston (IAH) arrived on time 76% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0% were cancelled, and 11% arrived an hour or more late.
- United Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 12pm did best (83% on time); around 1pm did worst (76%).
- Sunday was the most reliable day to fly (81% on time) and Saturday the least (64%).
- The largest source of delay minutes was late-arriving aircraft (51%).
Which airline is most on time from SJC to IAH?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 76% | 0.0% | 17 min | 10.7% | 215 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 12pm83%23 flights
- 1pm76%188 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday73%0.0% cancelled
- Tuesday80%0.0% cancelled
- Wednesday77%0.0% cancelled
- Thursday74%0.0% cancelled
- Friday80%0.0% cancelled
- Saturday64%0.0% cancelled
- Sunday81%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft51%
- Air traffic control & airport congestion38%
- Airline (crew, maintenance, cleaning, fueling)11%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
SJC to IAH: common questions
- How often are SJC to IAH flights on time?
- 76% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from San Jose to Houston cancelled?
- 0.0% of scheduled flights were cancelled (0 of 215).
- How long are typical delays?
- Across all flights the average arrival delay was 17 min (early arrivals count as zero). Flights that were late arrived 63 min behind schedule on average, and 10.7% of flights were an hour or more late.
- How long is taxi time at SJC?
- Flights on this route spent 15 min taxiing from the gate to takeoff on average.
Related routes
Return trip: IAH to SJC — 85% on time
More flights from San Jose
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SJC → IAH, nonstop flights by US airlines that report to the DOT. How we calculate this.