Historical on-time performance
San Antonio to Dallas
248 miData through May 2026Source: US DOT · BTS
Flights on SAT–DAL arrive on time 83% of the time over the last 12 months.
On-time rate83%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights
based on 2,717 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time83%Medianon timep9030 minCancel1.2%Flights2,717
Why flights run late
Delay causes
- Airline15%
- Weather4%
- Air traffic (NAS)27%
- Late aircraft54%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline25%
- Weather72%
- Air traffic (NAS)3%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 32 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 → DAL
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 on time · 2,364 flights
- Middays87% on time · p90 15 min · 2,299 flights
- Afternoons76% on time · p90 35 min · 1,228 flights
- Overnights73% on time · p90 60 min · 916 flights
- Evenings72% on time · p90 45 min · 1,555 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 78% to 87% on time.
- Tuesdays87% on time · p90 20 min · 1,284 flights
- Saturdays85% on time · p90 20 min · 847 flights
- Wednesdays85% on time · p90 20 min · 1,287 flights
- Mondays83% on time · p90 25 min · 1,276 flights
- Sundays81% on time · p90 30 min · 1,118 flights
- Fridays81% on time · p90 30 min · 1,279 flights
- Thursdays78% on time · p90 35 min · 1,271 flights
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