Historical on-time performance
St. Louis to San Antonio
Flights on STL–SAT arrive on time 81% of the time over the last 12 months.
based on 491 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time81%Medianon timep9035 minCancel0.2%Flights491
Why flights run late
Delay causes
- Airline30%
- Weather1%
- Air traffic (NAS)10%
- Late aircraft59%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 1 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 STL → SAT
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 66% to 90% on time.
- Mornings90% on time · p90 10 min · 258 flights
- Middays86% on time · p90 20 min · 532 flights
- Afternoons74% on time · p90 35 min · 265 flights
- Overnights73% on time · p90 50 min · 333 flights
- Evenings66% on time · p90 75 min · 211 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 81% on time.
- Fridays81% on time · p90 30 min · 258 flights
- Wednesdays81% on time · p90 30 min · 231 flights
- Mondays81% on time · p90 45 min · 252 flights
- Tuesdays80% on time · p90 30 min · 234 flights
- Sundays78% on time · p90 40 min · 219 flights
- Thursdays76% on time · p90 35 min · 254 flights
- Saturdays75% on time · p90 45 min · 151 flights · limited
Keep exploring