Historical on-time performance
San Antonio to Houston
192 miData through May 2026Source: US DOT · BTS
Flights on SAT–HOU arrive on time 74% of the time over the last 12 months.
On-time rate74%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights
based on 1,409 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time74%Medianon timep9040 minCancel0.4%Flights1,409
Why flights run late
Delay causes
- Airline19%
- Weather1%
- Air traffic (NAS)35%
- Late aircraft45%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline20%
- Weather60%
- Air traffic (NAS)20%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 5 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 SAT → 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 — 90% on time.
- Mornings90% on time · p90 10 min · 1,728 flights
- Middays81% on time · p90 25 min · 913 flights
- Afternoons79% on time · p90 35 min · 483 flights
- Overnights70% on time · p90 50 min · 351 flights
- Evenings65% on time · p90 55 min · 1,194 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 82% on time.
- Saturdays82% on time · p90 30 min · 661 flights
- Tuesdays81% on time · p90 25 min · 636 flights
- Wednesdays80% on time · p90 35 min · 638 flights
- Fridays80% on time · p90 30 min · 671 flights
- Mondays79% on time · p90 30 min · 668 flights
- Sundays77% on time · p90 30 min · 722 flights
- Thursdays76% on time · p90 35 min · 673 flights
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