Historical on-time performance
Austin to Miami
1,103 miData through May 2026Source: US DOT · BTS
Flights on AUS–MIA arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights
based on 1,940 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time86%Medianon timep9020 minCancel1.9%Flights154
- American AirlinesbestOn-time79%Medianon timep9040 minCancel1.5%Flights1,509
- Southwest AirlinesOn-time64%Median5 minp9040 minCancel0.7%Flights277
Why flights run late
Delay causes
- Airline36%
- Weather2%
- Air traffic (NAS)18%
- Late aircraft44%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline7%
- Weather85%
- Air traffic (NAS)7%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 27 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 AUS → 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 — 86% on time.
- Mornings86% on time · p90 15 min · 2,374 flights
- Middays76% on time · p90 45 min · 1,673 flights
- Evenings66% on time · p90 90 min · 945 flights
- Afternoons62% on time · p90 70 min · 730 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 81% on time.
- Tuesdays81% on time · p90 30 min · 799 flights
- Wednesdays78% on time · p90 45 min · 791 flights
- Thursdays77% on time · p90 40 min · 837 flights
- Saturdays76% on time · p90 45 min · 807 flights
- Fridays76% on time · p90 40 min · 817 flights
- Mondays76% on time · p90 45 min · 822 flights
- Sundays72% on time · p90 50 min · 851 flights
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