Historical on-time performance
San Diego to Houston
1,312 miData through Dec 2025Source: US DOT · BTS
Flights on SAN–HOU arrive on time 75% of the time over the last 12 months.
On-time rate75%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.8%of scheduled flights
based on 872 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time75%Medianon timep9035 minCancel0.8%Flights872
Why flights run late
Delay causes
- Airline28%
- Weather0%
- Air traffic (NAS)14%
- Late aircraft57%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SAN → HOU
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 90% on time.
- Mornings90% on time · p90 10 min · 983 flights
- Middays72% on time · p90 40 min · 378 flights
- Evenings68% on time · p90 50 min · 681 flights
- Afternoons61% on time · p90 55 min · 334 flights
- Overnights57% on time · p90 60 min · 67 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 66% to 86% on time.
- Saturdays86% on time · p90 20 min · 339 flights
- Wednesdays83% on time · p90 30 min · 344 flights
- Tuesdays82% on time · p90 20 min · 347 flights
- Mondays74% on time · p90 35 min · 352 flights
- Sundays71% on time · p90 45 min · 363 flights
- Thursdays70% on time · p90 50 min · 348 flights
- Fridays66% on time · p90 60 min · 350 flights
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