Historical on-time performance
Phoenix to San Antonio
843 miData through May 2026Source: US DOT · BTS
Flights on PHX–SAT arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 2,424 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- American AirlinesbestOn-time79%Medianon timep9050 minCancel0.8%Flights1,039
- Southwest AirlinesOn-time75%Medianon timep9040 minCancel0.2%Flights1,385
Why flights run late
Delay causes
- Airline34%
- Weather2%
- Air traffic (NAS)5%
- Late aircraft59%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline18%
- Weather73%
- Air traffic (NAS)9%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 11 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 PHX → SAT
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 — 91% on time.
- Mornings91% on time · p90 10 min · 2,182 flights
- Middays80% on time · p90 45 min · 2,078 flights
- Afternoons74% on time · p90 40 min · 1,287 flights
- Evenings69% on time · p90 60 min · 1,763 flights
- Overnights65% on time · p90 60 min · 498 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 83% on time.
- Tuesdays83% on time · p90 30 min · 1,067 flights
- Wednesdays82% on time · p90 30 min · 1,085 flights
- Saturdays81% on time · p90 35 min · 902 flights
- Sundays78% on time · p90 40 min · 1,119 flights
- Mondays77% on time · p90 45 min · 1,210 flights
- Fridays76% on time · p90 45 min · 1,215 flights
- Thursdays75% on time · p90 50 min · 1,216 flights
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