OnTimeStats

Historical on-time performance

Hancock to Chicago

360 miData through May 2026Source: US DOT · BTS

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

On-time rate63%arrived within 15 min
p90 delay140 min1 in 10 flights is worse (tail risk)
Cancelled6.0%of scheduled flights

based on 795 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
    p90140 min
    Cancel6.0%
    Flights795

Why flights run late

Delay causes

  • Airline33%
  • Weather21%
  • Air traffic (NAS)14%
  • Late aircraft32%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather98%
  • Air traffic (NAS)2%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 48 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 CMX → ORD

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 65% to 70% on time.

  • Mornings70% on time · p90 115 min · 1,095 flights
  • Middays70% on time · p90 65 min · 141 flights · limited
  • Evenings66% on time · p90 60 min · 494 flights
  • Afternoons65% on time · p90 90 min · 521 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 62% to 74% on time.

  • Tuesdays74% on time · p90 85 min · 312 flights
  • Mondays70% on time · p90 95 min · 323 flights
  • Wednesdays69% on time · p90 60 min · 325 flights
  • Saturdays69% on time · p90 70 min · 314 flights
  • Thursdays67% on time · p90 80 min · 324 flights
  • Fridays65% on time · p90 70 min · 327 flights
  • Sundays62% on time · p90 115 min · 327 flights

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.