OnTimeStats

Historical on-time performance

Chicago to Eau Claire

269 miData through May 2026Source: US DOT · BTS

Flights on ORD–EAU arrive on time 63% of the time over the last 12 months.

On-time rate63%arrived within 15 min
p90 delay90 min1 in 10 flights is worse (tail risk)
Cancelled4.3%of scheduled flights

based on 625 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time63%
    Medianon time
    p9090 min
    Cancel4.3%
    Flights625

Why flights run late

Delay causes

  • Airline27%
  • Weather18%
  • Air traffic (NAS)18%
  • Late aircraft37%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline4%
  • Weather96%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 27 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 ORD → EAU

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 63% to 69% on time.

  • Middays69% on time · p90 80 min · 379 flights
  • Overnights63% on time · p90 75 min · 522 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 58% to 69% on time.

  • Sundays69% on time · p90 95 min · 154 flights · limited
  • Thursdays68% on time · p90 70 min · 149 flights · limited
  • Fridays68% on time · p90 65 min · 154 flights · limited
  • Mondays65% on time · p90 90 min · 152 flights · limited
  • Wednesdays64% on time · p90 75 min · 129 flights · limited
  • Saturdays58% on time · p90 130 min · 101 flights · limited

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.