OnTimeStats

Historical on-time performance

Miami to Indianapolis

1,021 miData through Dec 2025Source: US DOT · BTS

Flights on MIA–IND arrive on time 65% of the time over the last 12 months.

On-time rate65%arrived within 15 min
p90 delay75 min1 in 10 flights is worse (tail risk)
Cancelled1.7%of scheduled flights

based on 780 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Envoy Airbest
    On-time85%
    Medianon time
    p9010 min
    Cancel5.9%
    Flights34
  • American Airlines
    On-time65%
    Medianon time
    p9075 min
    Cancel1.5%
    Flights713
  • Southwest Airlines
    On-time45%
    Median15 min
    p90195 min
    Cancel0.0%
    Flights33

Why flights run late

Delay causes

  • Airline33%
  • Weather6%
  • Air traffic (NAS)19%
  • 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 MIA → IND

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 — 88% on time.

  • Mornings88% on time · p90 15 min · 197 flights · limited
  • Middays79% on time · p90 40 min · 391 flights
  • Afternoons65% on time · p90 85 min · 607 flights
  • Evenings63% on time · p90 70 min · 202 flights
  • Overnights60% on time · p90 70 min · 1,057 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 64% to 72% on time.

  • Wednesdays72% on time · p90 60 min · 317 flights
  • Thursdays69% on time · p90 55 min · 341 flights
  • Tuesdays68% on time · p90 65 min · 319 flights
  • Mondays66% on time · p90 70 min · 358 flights
  • Fridays66% on time · p90 65 min · 363 flights
  • Saturdays66% on time · p90 70 min · 402 flights
  • Sundays64% on time · p90 65 min · 354 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.