Historical on-time performance
Houston to San Diego
Flights on IAH–SAN arrive on time 80% of the time over the last 12 months.
based on 1,692 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time80%Medianon timep9040 minCancel0.5%Flights1,692
Why flights run late
Delay causes
- Airline29%
- Weather11%
- Air traffic (NAS)20%
- Late aircraft39%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline25%
- Weather63%
- Air traffic (NAS)13%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 8 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly IAH → SAN
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 71% to 85% on time.
- Mornings85% on time · p90 20 min · 1,478 flights
- Middays82% on time · p90 50 min · 771 flights
- Afternoons81% on time · p90 40 min · 1,108 flights
- Overnights74% on time · p90 45 min · 755 flights
- Evenings71% on time · p90 55 min · 1,188 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 83% on time.
- Tuesdays83% on time · p90 30 min · 706 flights
- Wednesdays81% on time · p90 25 min · 773 flights
- Saturdays80% on time · p90 40 min · 688 flights
- Mondays79% on time · p90 50 min · 785 flights
- Sundays78% on time · p90 40 min · 782 flights
- Fridays78% on time · p90 45 min · 782 flights
- Thursdays76% on time · p90 45 min · 784 flights
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