OnTimeStats

Historical on-time performance

Denver to Columbus

1,154 miData through Dec 2025Source: US DOT · BTS

Flights on DEN–CMH arrive on time 70% of the time over the last 12 months.

On-time rate70%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights

based on 1,660 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlinesbest
    On-time77%
    Medianon time
    p9040 min
    Cancel0.3%
    Flights729
  • Southwest Airlines
    On-time65%
    Medianon time
    p9065 min
    Cancel0.2%
    Flights931

Why flights run late

Delay causes

  • Airline27%
  • Weather2%
  • Air traffic (NAS)15%
  • Late aircraft56%
  • 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 DEN → CMH

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 — 86% on time.

  • Mornings86% on time · p90 20 min · 1,658 flights
  • Middays79% on time · p90 30 min · 837 flights
  • Afternoons65% on time · p90 55 min · 692 flights
  • Evenings63% on time · p90 75 min · 1,865 flights
  • Overnights51% on time · p90 90 min · 245 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 71% to 73% on time.

  • Tuesdays73% on time · p90 50 min · 762 flights
  • Sundays73% on time · p90 45 min · 785 flights
  • Mondays73% on time · p90 40 min · 792 flights
  • Thursdays73% on time · p90 50 min · 835 flights
  • Saturdays73% on time · p90 50 min · 610 flights
  • Wednesdays72% on time · p90 50 min · 716 flights
  • Fridays71% on time · p90 50 min · 797 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.