Historical on-time performance
Miami to Austin
1,103 miData through May 2026Source: US DOT · BTS
Flights on MIA–AUS arrive on time 72% of the time over the last 12 months.
On-time rate72%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled1.2%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
- American AirlinesbestOn-time73%Medianon timep9055 minCancel1.4%Flights1,510
- Delta Air LinesOn-time66%Medianon timep90105 minCancel1.3%Flights154
- Southwest AirlinesOn-time66%Median5 minp9050 minCancel0.4%Flights276
Why flights run late
Delay causes
- Airline37%
- Weather6%
- Air traffic (NAS)16%
- Late aircraft41%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline4%
- Weather88%
- Air traffic (NAS)8%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 24 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 MIA → AUS
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 — 88% on time.
- Mornings88% on time · p90 15 min · 1,233 flights
- Middays70% on time · p90 50 min · 1,016 flights
- Afternoons68% on time · p90 80 min · 1,118 flights
- Overnights66% on time · p90 65 min · 1,058 flights
- Evenings66% on time · p90 85 min · 1,296 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 66% to 78% on time.
- Tuesdays78% on time · p90 40 min · 805 flights
- Wednesdays76% on time · p90 50 min · 782 flights
- Mondays73% on time · p90 55 min · 815 flights
- Thursdays72% on time · p90 55 min · 842 flights
- Fridays71% on time · p90 60 min · 818 flights
- Saturdays68% on time · p90 70 min · 807 flights
- Sundays66% on time · p90 80 min · 852 flights
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