OnTimeStats

Historical on-time performance

Chicago to Appleton

160 miData through Dec 2025Source: US DOT · BTS

Flights on ORD–ATW arrive on time 70% of the time over the last 12 months.

On-time rate70%arrived within 15 min
p90 delay65 min1 in 10 flights is worse (tail risk)
Cancelled2.0%of scheduled flights

based on 2,304 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Envoy Airbest
    On-time73%
    Medianon time
    p9045 min
    Cancel2.4%
    Flights829
  • SkyWest Airlines
    On-time68%
    Medianon time
    p9080 min
    Cancel1.8%
    Flights1,475

Why flights run late

Delay causes

  • Airline32%
  • Weather10%
  • Air traffic (NAS)18%
  • Late aircraft41%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly ORD → ATW

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

Mornings are the most reliable time of day to fly this route — 81% on time.

  • Mornings81% on time · p90 35 min · 585 flights
  • Middays74% on time · p90 65 min · 1,537 flights
  • Afternoons71% on time · p90 55 min · 1,341 flights
  • Overnights70% on time · p90 55 min · 819 flights
  • Evenings66% on time · p90 75 min · 1,225 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 66% to 75% on time.

  • Tuesdays75% on time · p90 60 min · 782 flights
  • Thursdays74% on time · p90 50 min · 795 flights
  • Saturdays73% on time · p90 50 min · 743 flights
  • Wednesdays73% on time · p90 55 min · 777 flights
  • Mondays71% on time · p90 55 min · 809 flights
  • Fridays70% on time · p90 60 min · 807 flights
  • Sundays66% on time · p90 80 min · 795 flights
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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.