Historical on-time performance
San Diego to San Antonio
1,129 miData through Dec 2025Source: US DOT · BTS
Flights on SAN–SAT arrive on time 75% of the time over the last 12 months.
On-time rate75%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 660 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time75%Medianon timep9040 minCancel0.5%Flights660
Why flights run late
Delay causes
- Airline22%
- Weather0%
- Air traffic (NAS)9%
- Late aircraft70%
- 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 SAN → SAT
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 59% to 86% on time.
- Afternoons86% on time · p90 20 min · 219 flights
- Mornings81% on time · p90 25 min · 410 flights
- Middays75% on time · p90 30 min · 522 flights
- Evenings59% on time · p90 65 min · 628 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 63% to 77% on time.
- Saturdays77% on time · p90 40 min · 227 flights
- Tuesdays76% on time · p90 30 min · 257 flights
- Wednesdays75% on time · p90 40 min · 256 flights
- Mondays74% on time · p90 35 min · 262 flights
- Thursdays74% on time · p90 45 min · 257 flights
- Sundays69% on time · p90 50 min · 289 flights
- Fridays63% on time · p90 55 min · 260 flights
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