OnTimeStats

Historical on-time performance

INDORD

Indianapolis to Chicago

177 miData through Dec 2025Source: US DOT · BTS

Flights on IND–ORD arrive on time 79% of the time over the last 12 months.

On-time rate79%arrived within 15 min
Median delayon timetypical arrival
p90 delay35 min1 in 10 flights is worsetail risk
Cancelled2.1%of scheduled flights

based on 4,505 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Republic Airwaysbest
    On-time83%
    Medianon time
    p9025 min
    Cancel1.8%
    Flights3,049
  • American Airlines
    On-time75%
    Medianon time
    p9045 min
    Cancel5.4%
    Flights149
  • United Airlines
    On-time67%
    Medianon time
    p9070 min
    Cancel2.6%
    Flights466
  • Envoy Air
    On-time79%
    Medianon time
    p9040 min
    Cancel1.0%
    Flights618
  • SkyWest Airlines
    On-time62%
    Medianon time
    p9085 min
    Cancel5.8%
    Flights223

Why flights run late

Delay causes

  • Airline25%
  • Weather10%
  • Air traffic (NAS)39%
  • Late aircraft27%
  • Security0%

Most delay minutes here are attributed to Air traffic (NAS).

Over time

On-time trend

By season

On-time rate by month

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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.