OnTimeStats

Historical on-time performance

Denver to Kansas City

533 miData through May 2026Source: US DOT · BTS

Flights on DEN–MCI arrive on time 74% of the time over the last 12 months.

On-time rate74%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights

based on 3,909 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlinesbest
    On-time87%
    Medianon time
    p9015 min
    Cancel0.4%
    Flights252
  • Frontier Airlines
    On-time81%
    Medianon time
    p9030 min
    Cancel0.0%
    Flights31
  • United Airlines
    On-time76%
    Medianon time
    p9050 min
    Cancel0.3%
    Flights1,296
  • Southwest Airlines
    On-time71%
    Medianon time
    p9050 min
    Cancel0.5%
    Flights2,330

Why flights run late

Delay causes

  • Airline28%
  • Weather3%
  • Air traffic (NAS)12%
  • Late aircraft57%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline35%
  • Weather53%
  • Air traffic (NAS)12%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 17 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 DEN → MCI

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

Mornings are the most reliable time of day to fly this route — 90% on time.

  • Mornings90% on time · p90 10 min · 3,215 flights
  • Middays81% on time · p90 30 min · 3,469 flights
  • Afternoons69% on time · p90 45 min · 1,497 flights
  • Overnights65% on time · p90 70 min · 2,111 flights
  • Evenings64% on time · p90 75 min · 2,454 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 72% to 79% on time.

  • Wednesdays79% on time · p90 35 min · 1,770 flights
  • Tuesdays79% on time · p90 35 min · 1,787 flights
  • Mondays77% on time · p90 40 min · 1,946 flights
  • Saturdays76% on time · p90 45 min · 1,434 flights
  • Sundays75% on time · p90 45 min · 1,893 flights
  • Thursdays74% on time · p90 45 min · 1,924 flights
  • Fridays72% on time · p90 55 min · 1,992 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.