OnTimeStats

Historical on-time performance

Chicago to Indianapolis

177 miData through Dec 2025Source: US DOT · BTS

Flights on ORD–IND arrive on time 77% of the time over the last 12 months.

On-time rate77%arrived within 15 min
Median delayon timetypical arrival
p90 delay45 min1 in 10 flights is worsetail risk
Cancelled2.3%of scheduled flights

based on 4,512 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Republic Airways
    On-time79%
    Medianon time
    p9040 min
    Cancel2.1%
    Flights3,055
  • United Airlines
    On-time69%
    Medianon time
    p9060 min
    Cancel2.4%
    Flights467
  • SkyWest Airlines
    On-time71%
    Medianon time
    p9060 min
    Cancel6.3%
    Flights223
  • Envoy Airbest
    On-time80%
    Medianon time
    p9030 min
    Cancel1.1%
    Flights619
  • American Airlines
    On-time62%
    Medianon time
    p9065 min
    Cancel4.7%
    Flights148

Why flights run late

Delay causes

  • Airline24%
  • Weather15%
  • Air traffic (NAS)18%
  • Late aircraft43%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

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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.