Historical on-time performance
Nashville to San Antonio
822 miData through Dec 2025Source: US DOT · BTS
Flights on BNA–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)
Cancelled0.7%of scheduled flights
based on 936 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 minCancel0.7%Flights936
Why flights run late
Delay causes
- Airline19%
- Weather2%
- 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 BNA → SAT
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 — 94% on time.
- Mornings94% on time · p90 5 min · 1,075 flights
- Overnights70% on time · p90 45 min · 964 flights
- Afternoons70% on time · p90 50 min · 194 flights · limited
- Evenings66% on time · p90 70 min · 158 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 86% on time.
- Wednesdays86% on time · p90 15 min · 340 flights
- Tuesdays85% on time · p90 20 min · 342 flights
- Saturdays83% on time · p90 30 min · 278 flights
- Fridays79% on time · p90 30 min · 358 flights
- Mondays79% on time · p90 30 min · 357 flights
- Sundays78% on time · p90 40 min · 392 flights
- Thursdays76% on time · p90 35 min · 369 flights
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