OnTimeStats

Historical on-time performance

Chicago to Columbus

284 miData through Dec 2025Source: US DOT · BTS

Flights on MDW–CMH arrive on time 78% of the time over the last 12 months.

On-time rate78%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights

based on 1,261 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time78%
    Medianon time
    p9040 min
    Cancel0.9%
    Flights1,261

Why flights run late

Delay causes

  • Airline33%
  • Weather1%
  • Air traffic (NAS)11%
  • Late aircraft55%
  • 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 MDW → CMH

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

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 60% to 89% on time.

  • Mornings89% on time · p90 15 min · 1,100 flights
  • Middays86% on time · p90 15 min · 953 flights
  • Afternoons78% on time · p90 40 min · 814 flights
  • Evenings70% on time · p90 40 min · 730 flights
  • Overnights60% on time · p90 65 min · 722 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 71% to 82% on time.

  • Tuesdays82% on time · p90 35 min · 652 flights
  • Wednesdays81% on time · p90 25 min · 648 flights
  • Mondays80% on time · p90 35 min · 673 flights
  • Thursdays78% on time · p90 30 min · 666 flights
  • Saturdays78% on time · p90 40 min · 407 flights
  • Fridays77% on time · p90 30 min · 674 flights
  • Sundays71% on time · p90 45 min · 599 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.