Historical on-time performance
Houston to Sacramento
1,609 miData through Dec 2025Source: US DOT · BTS
Flights on IAH–SMF arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.3%of scheduled flights
based on 667 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time77%Medianon timep9045 minCancel0.3%Flights667
Why flights run late
Delay causes
- Airline44%
- Weather3%
- Air traffic (NAS)13%
- Late aircraft40%
- 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 → SMF
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 64% to 85% on time.
- Mornings85% on time · p90 30 min · 425 flights
- Middays82% on time · p90 30 min · 76 flights · limited
- Overnights70% on time · p90 70 min · 517 flights
- Evenings64% on time · p90 65 min · 576 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 70% to 76% on time.
- Tuesdays76% on time · p90 40 min · 232 flights
- Wednesdays74% on time · p90 55 min · 240 flights
- Mondays74% on time · p90 65 min · 239 flights
- Fridays71% on time · p90 50 min · 237 flights
- Thursdays71% on time · p90 55 min · 236 flights
- Saturdays70% on time · p90 65 min · 193 flights · limited
- Sundays70% on time · p90 70 min · 217 flights
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