Historical on-time performance
Dallas to San Antonio
248 miData through May 2026Source: US DOT · BTS
Flights on DAL–SAT arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights
based on 2,716 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 timep9035 minCancel1.1%Flights2,716
Why flights run late
Delay causes
- Airline30%
- Weather1%
- Air traffic (NAS)8%
- Late aircraft60%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline17%
- Weather80%
- Air traffic (NAS)3%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 30 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 DAL → 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 — 93% on time.
- Mornings93% on time · p90 5 min · 2,294 flights
- Middays84% on time · p90 20 min · 1,925 flights
- Afternoons76% on time · p90 35 min · 1,586 flights
- Evenings71% on time · p90 55 min · 1,454 flights
- Overnights62% on time · p90 60 min · 1,114 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 85% on time.
- Tuesdays85% on time · p90 20 min · 1,284 flights
- Wednesdays83% on time · p90 30 min · 1,286 flights
- Saturdays81% on time · p90 25 min · 850 flights
- Mondays80% on time · p90 30 min · 1,278 flights
- Fridays78% on time · p90 35 min · 1,279 flights
- Sundays76% on time · p90 40 min · 1,123 flights
- Thursdays76% on time · p90 40 min · 1,273 flights
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