Historical on-time performance
San Diego to Houston
1,312 miData through May 2026Source: US DOT · BTS
Flights on SAN–HOU arrive on time 71% of the time over the last 12 months.
On-time rate71%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights
based on 957 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time71%Medianon timep9035 minCancel0.4%Flights957
Why flights run late
Delay causes
- Airline27%
- Weather0%
- Air traffic (NAS)16%
- Late aircraft57%
- Security1%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather75%
- Air traffic (NAS)25%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 4 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 SAN → HOU
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 88% on time.
- Mornings88% on time · p90 15 min · 1,036 flights
- Middays71% on time · p90 40 min · 438 flights
- Evenings66% on time · p90 55 min · 699 flights
- Afternoons58% on time · p90 55 min · 343 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 65% to 84% on time.
- Saturdays84% on time · p90 20 min · 342 flights
- Tuesdays82% on time · p90 20 min · 371 flights
- Wednesdays80% on time · p90 30 min · 367 flights
- Mondays72% on time · p90 35 min · 381 flights
- Sundays69% on time · p90 45 min · 375 flights
- Thursdays68% on time · p90 50 min · 383 flights
- Fridays65% on time · p90 60 min · 385 flights
Keep exploring