Historical on-time performance
San Antonio to San Diego
1,129 miData through Dec 2025Source: US DOT · BTS
Flights on SAT–SAN arrive on time 80% of the time over the last 12 months.
On-time rate80%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.3%of scheduled flights
based on 623 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time80%Medianon timep9035 minCancel0.3%Flights623
Why flights run late
Delay causes
- Airline28%
- Weather0%
- Air traffic (NAS)15%
- 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 SAT → SAN
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 — 91% on time.
- Mornings91% on time · p90 10 min · 545 flights
- Middays84% on time · p90 20 min · 473 flights
- Afternoons71% on time · p90 60 min · 161 flights · limited
- Evenings70% on time · p90 55 min · 526 flights
- Overnights47% on time · p90 60 min · 58 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 83% on time.
- Wednesdays83% on time · p90 25 min · 256 flights
- Tuesdays82% on time · p90 30 min · 256 flights
- Mondays80% on time · p90 35 min · 250 flights
- Saturdays80% on time · p90 35 min · 227 flights
- Fridays79% on time · p90 25 min · 250 flights
- Sundays77% on time · p90 40 min · 278 flights
- Thursdays75% on time · p90 45 min · 246 flights
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