OnTimeStats

Historical on-time performance

Miami to Dallas

1,109 miData through Dec 2025Source: US DOT · BTS

Flights on MIA–DAL arrive on time 74% of the time over the last 12 months.

On-time rate74%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights

based on 359 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time74%
    Medianon time
    p9050 min
    Cancel1.1%
    Flights359

Why flights run late

Delay causes

  • Airline28%
  • Weather4%
  • Air traffic (NAS)22%
  • Late aircraft46%
  • 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 MIA → DAL

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 — 87% on time.

  • Mornings87% on time · p90 20 min · 406 flights
  • Middays69% on time · p90 60 min · 458 flights
  • Afternoons65% on time · p90 55 min · 372 flights
  • Evenings47% on time · p90 95 min · 115 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 63% to 83% on time.

  • Tuesdays83% on time · p90 25 min · 167 flights · limited
  • Mondays78% on time · p90 35 min · 171 flights · limited
  • Wednesdays75% on time · p90 30 min · 167 flights · limited
  • Thursdays70% on time · p90 50 min · 170 flights · limited
  • Fridays70% on time · p90 60 min · 170 flights · limited
  • Sundays67% on time · p90 80 min · 263 flights
  • Saturdays63% on time · p90 80 min · 281 flights
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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.