OnTimeStats

Historical on-time performance

Austin to Miami

1,103 miData through Dec 2025Source: US DOT · BTS

Flights on AUS–MIA arrive on time 78% of the time over the last 12 months.

On-time rate78%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights

based on 1,724 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Too close to call — no single carrier is clearly more on-time here.

  • Delta Air Lines
    On-time84%
    Medianon time
    p9030 min
    Cancel0.0%
    Flights31
  • American Airlines
    On-time79%
    Medianon time
    p9040 min
    Cancel1.4%
    Flights1,417
  • Southwest Airlines
    On-time70%
    Medianon time
    p9045 min
    Cancel0.4%
    Flights276

Why flights run late

Delay causes

  • Airline32%
  • Weather6%
  • Air traffic (NAS)21%
  • Late aircraft41%
  • Security0%

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 AUS → MIA

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

Mornings are the most reliable time of day to fly this route — 85% on time.

  • Mornings85% on time · p90 20 min · 2,227 flights
  • Middays75% on time · p90 50 min · 1,547 flights
  • Evenings65% on time · p90 85 min · 952 flights
  • Afternoons61% on time · p90 70 min · 917 flights

Best day of week

Tuesdays are the most reliable day to fly this route — 81% on time.

  • Tuesdays81% on time · p90 35 min · 803 flights
  • Saturdays76% on time · p90 45 min · 773 flights
  • Mondays76% on time · p90 45 min · 817 flights
  • Wednesdays75% on time · p90 60 min · 789 flights
  • Fridays73% on time · p90 45 min · 801 flights
  • Thursdays73% on time · p90 50 min · 822 flights
  • Sundays73% on time · p90 50 min · 840 flights
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Keep exploring

Related pages

Delay predictorfor this route→AUS airportAustin→MIA airportMiami→Republic Airways on this routecarrier detail→Republic Airwaysairline profile→

Methodology

A flight is on time when it arrives within 15 minutes of schedule — the US DOT / BTS standard. Median and p90(the “1-in-10 bad day”) are read from the full arrival-delay distribution, never averaged across periods.

Figures cover a carrier’s own BTS-coded flights. Cells below ~200 flights are flagged as limited data. All numbers are pre-computed from public BTS On-Time Performance data.