OnTimeStats

Historical on-time performance

Cincinnati to Chicago

249 miData through Dec 2025Source: US DOT · BTS

Flights on CVG–MDW arrive on time 84% of the time over the last 12 months.

On-time rate84%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights

based on 426 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time84%
    Medianon time
    p9020 min
    Cancel0.7%
    Flights426

Why flights run late

Delay causes

  • Airline38%
  • Weather4%
  • Air traffic (NAS)21%
  • Late aircraft37%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly CVG → MDW

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 75% to 90% on time.

  • Mornings90% on time · p90 10 min · 1,045 flights
  • Middays88% on time · p90 15 min · 361 flights
  • Afternoons79% on time · p90 30 min · 265 flights
  • Overnights76% on time · p90 30 min · 353 flights
  • Evenings75% on time · p90 40 min · 325 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 79% to 89% on time.

  • Thursdays89% on time · p90 10 min · 339 flights
  • Wednesdays87% on time · p90 20 min · 345 flights
  • Tuesdays87% on time · p90 15 min · 346 flights
  • Saturdays84% on time · p90 15 min · 282 flights
  • Mondays84% on time · p90 20 min · 344 flights
  • Fridays81% on time · p90 30 min · 340 flights
  • Sundays79% on time · p90 30 min · 353 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.