OnTimeStats

Historical on-time performance

Cleveland to Chicago

307 miData through May 2026Source: US DOT · BTS

Flights on CLE–MDW arrive on time 81% of the time over the last 12 months.

On-time rate81%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights

based on 1,108 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time81%
    Medianon time
    p9030 min
    Cancel0.9%
    Flights1,108

Why flights run late

Delay causes

  • Airline18%
  • Weather6%
  • Air traffic (NAS)23%
  • Late aircraft53%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline20%
  • Weather70%
  • Air traffic (NAS)10%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 10 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 CLE → MDW

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 71% to 89% on time.

  • Mornings89% on time · p90 10 min · 1,096 flights
  • Middays88% on time · p90 20 min · 872 flights
  • Afternoons81% on time · p90 30 min · 562 flights
  • Evenings76% on time · p90 45 min · 681 flights
  • Overnights71% on time · p90 55 min · 375 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 80% to 87% on time.

  • Wednesdays87% on time · p90 20 min · 531 flights
  • Tuesdays87% on time · p90 15 min · 529 flights
  • Saturdays83% on time · p90 20 min · 357 flights
  • Fridays83% on time · p90 30 min · 564 flights
  • Sundays82% on time · p90 25 min · 485 flights
  • Mondays81% on time · p90 30 min · 559 flights
  • Thursdays80% on time · p90 30 min · 561 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.