OnTimeStats

Historical on-time performance

Birmingham to Miami

661 miData through Dec 2025Source: US DOT · BTS

Flights on BHM–MIA arrive on time 82% of the time over the last 12 months.

On-time rate82%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled1.5%of scheduled flights

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

By airline

How each carrier compares

  • Envoy Airbest
    On-time83%
    Medianon time
    p9025 min
    Cancel1.3%
    Flights693
  • American Airlines
    On-time65%
    Median5 min
    p9065 min
    Cancel6.5%
    Flights31

Why flights run late

Delay causes

  • Airline20%
  • Weather24%
  • Air traffic (NAS)15%
  • 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 BHM → MIA

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

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 59% to 88% on time.

  • Mornings88% on time · p90 15 min · 1,132 flights
  • Middays85% on time · p90 15 min · 138 flights · limited
  • Evenings65% on time · p90 75 min · 820 flights
  • Afternoons59% on time · p90 95 min · 74 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 75% to 82% on time.

  • Wednesdays82% on time · p90 40 min · 296 flights
  • Tuesdays82% on time · p90 30 min · 301 flights
  • Fridays79% on time · p90 55 min · 313 flights
  • Mondays77% on time · p90 45 min · 320 flights
  • Thursdays76% on time · p90 50 min · 311 flights
  • Saturdays76% on time · p90 45 min · 312 flights
  • Sundays75% on time · p90 55 min · 311 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.