Historical on-time performance
Miami to San Antonio
1,143 miData through Dec 2025Source: US DOT · BTS
Flights on MIA–SAT arrive on time 66% of the time over the last 12 months.
On-time rate66%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled1.8%of scheduled flights
based on 437 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Envoy AirbestOn-time84%Medianon timep9020 minCancel1.1%Flights92
- American AirlinesOn-time61%Medianon timep9070 minCancel2.0%Flights345
Why flights run late
Delay causes
- Airline40%
- Weather2%
- Air traffic (NAS)11%
- Late aircraft45%
- Security1%
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 MIA → 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 65% to 71% on time.
- Afternoons71% on time · p90 50 min · 224 flights
- Middays69% on time · p90 35 min · 185 flights · limited
- Overnights65% on time · p90 60 min · 1,046 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 60% to 73% on time.
- Tuesdays73% on time · p90 50 min · 211 flights
- Fridays71% on time · p90 60 min · 217 flights
- Wednesdays70% on time · p90 40 min · 211 flights
- Mondays67% on time · p90 55 min · 220 flights
- Thursdays63% on time · p90 55 min · 212 flights
- Sundays62% on time · p90 70 min · 216 flights
- Saturdays60% on time · p90 65 min · 230 flights
Advertisement
Keep exploring