OnTimeStats

Historical on-time performance

Indianapolis to Atlanta

432 miData through May 2026Source: US DOT · BTS

Flights on IND–ATL arrive on time 87% of the time over the last 12 months.

On-time rate87%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights

based on 3,005 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Delta Air Linesbest
    On-time88%
    Medianon time
    p9010 min
    Cancel1.5%
    Flights2,728
  • Southwest Airlines
    On-time80%
    Medianon time
    p9030 min
    Cancel0.0%
    Flights247
  • Spirit Airlines
    On-time57%
    Medianon time
    p90110 min
    Cancel3.3%
    Flights30

Why flights run late

Delay causes

  • Airline34%
  • Weather6%
  • Air traffic (NAS)20%
  • Late aircraft40%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline60%
  • Weather40%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Airline. Shares are among 43 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 IND → ATL

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 65% to 90% on time.

  • Mornings90% on time · p90 10 min · 3,409 flights
  • Middays89% on time · p90 15 min · 2,630 flights
  • Afternoons84% on time · p90 25 min · 1,584 flights
  • Evenings77% on time · p90 45 min · 1,984 flights
  • Overnights65% on time · p90 65 min · 254 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 82% to 88% on time.

  • Wednesdays88% on time · p90 15 min · 1,349 flights
  • Tuesdays88% on time · p90 15 min · 1,331 flights
  • Thursdays87% on time · p90 20 min · 1,477 flights
  • Saturdays85% on time · p90 20 min · 1,181 flights
  • Fridays84% on time · p90 25 min · 1,529 flights
  • Mondays84% on time · p90 25 min · 1,522 flights
  • Sundays82% on time · p90 35 min · 1,472 flights

Keep exploring

Related pages

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.