Historical on-time performance
San Antonio to San Diego
1,129 miData through May 2026Source: US DOT · BTS
Flights on SAT–SAN arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights
based on 571 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time78%Medianon timep9040 minCancel0.4%Flights571
Why flights run late
Delay causes
- Airline27%
- Weather0%
- Air traffic (NAS)14%
- Late aircraft59%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 2 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 → SAN
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 · 646 flights
- Middays83% on time · p90 20 min · 373 flights
- Afternoons69% on time · p90 60 min · 124 flights · limited
- Evenings69% on time · p90 55 min · 607 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 85% on time.
- Tuesdays85% on time · p90 20 min · 259 flights
- Wednesdays82% on time · p90 25 min · 258 flights
- Saturdays81% on time · p90 30 min · 229 flights
- Mondays79% on time · p90 40 min · 259 flights
- Fridays78% on time · p90 25 min · 262 flights
- Sundays75% on time · p90 40 min · 283 flights
- Thursdays74% on time · p90 45 min · 258 flights
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