OnTimeStats

Historical on-time performance

Chicago to Idaho Falls

1,229 miData through Dec 2025Source: US DOT · BTS

Flights on ORD–IDA arrive on time 52% of the time over the last 12 months.

On-time rate52%arrived within 15 min
p90 delay80 min1 in 10 flights is worse (tail risk)
Cancelled1.6%of scheduled flights

based on 61 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time52%
    Median5 min
    p9080 min
    Cancel1.6%
    Flights61

Why flights run late

Delay causes

  • Airline81%
  • Weather6%
  • Air traffic (NAS)11%
  • Late aircraft2%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

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Keep exploring

Related pages

Delay predictorfor this route→ORD airportChicago→IDA airportIdaho Falls→SkyWest Airlines on this routecarrier detail→SkyWest Airlinesairline profile→

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.