Historical on-time performance
San Antonio to Miami
1,143 miData through May 2026Source: US DOT · BTS
Flights on SAT–MIA arrive on time 89% of the time over the last 12 months.
On-time rate89%arrived within 15 min
p90 delay10 min1 in 10 flights is worse (tail risk)
Cancelled1.5%of scheduled flights
based on 399 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- American AirlinesOn-time89%Medianon timep9010 minCancel1.5%Flights399
Why flights run late
Delay causes
- Airline28%
- Weather44%
- Air traffic (NAS)8%
- Late aircraft20%
- Security0%
Most delay minutes here are attributed to Weather.
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 6 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 → MIA
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 — 89% on time.
- Mornings89% on time · p90 10 min · 1,097 flights
- Evenings70% on time · p90 50 min · 267 flights
- Afternoons64% on time · p90 65 min · 183 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 78% to 88% on time.
- Tuesdays88% on time · p90 10 min · 217 flights
- Mondays85% on time · p90 25 min · 227 flights
- Thursdays83% on time · p90 30 min · 222 flights
- Fridays83% on time · p90 25 min · 227 flights
- Sundays81% on time · p90 30 min · 225 flights
- Wednesdays81% on time · p90 25 min · 218 flights
- Saturdays78% on time · p90 40 min · 234 flights
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