Historical on-time performance
Houston to San Jose
1,609 miData through Dec 2025Source: US DOT · BTS
Flights on IAH–SJC arrive on time 83% of the time over the last 12 months.
On-time rate83%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights
based on 152 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time83%Medianon timep9035 minCancel0.7%Flights152
Why flights run late
Delay causes
- Airline48%
- Weather5%
- Air traffic (NAS)33%
- Late aircraft14%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly IAH → SJC
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 63% to 89% on time.
- Middays89% on time · p90 20 min · 157 flights · limited
- Mornings88% on time · p90 20 min · 378 flights
- Evenings75% on time · p90 55 min · 191 flights · limited
- Overnights63% on time · p90 70 min · 196 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 85% on time.
- Saturdays85% on time · p90 30 min · 125 flights · limited
- Tuesdays80% on time · p90 35 min · 133 flights · limited
- Wednesdays80% on time · p90 45 min · 133 flights · limited
- Mondays80% on time · p90 60 min · 134 flights · limited
- Thursdays80% on time · p90 30 min · 132 flights · limited
- Sundays78% on time · p90 40 min · 134 flights · limited
- Fridays76% on time · p90 70 min · 132 flights · limited
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