OnTimeStats

Historical on-time performance

Denver to Milwaukee

896 miData through Dec 2025Source: US DOT · BTS

Flights on DEN–MKE arrive on time 71% of the time over the last 12 months.

On-time rate71%arrived within 15 min
p90 delay65 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights

based on 2,202 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Too close to call — no single carrier is clearly more on-time here.

  • United Airlines
    On-time73%
    Medianon time
    p9050 min
    Cancel0.0%
    Flights634
  • SkyWest Airlines
    On-time66%
    Medianon time
    p9080 min
    Cancel0.7%
    Flights284
  • Southwest Airlines
    On-time70%
    Medianon time
    p9070 min
    Cancel0.8%
    Flights1,284

Why flights run late

Delay causes

  • Airline33%
  • Weather2%
  • Air traffic (NAS)15%
  • Late aircraft50%
  • 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 → MKE

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 — 87% on time.

  • Mornings87% on time · p90 15 min · 1,570 flights
  • Middays81% on time · p90 30 min · 2,265 flights
  • Afternoons67% on time · p90 60 min · 747 flights
  • Overnights65% on time · p90 70 min · 1,247 flights
  • Evenings62% on time · p90 80 min · 1,941 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 71% to 77% on time.

  • Saturdays77% on time · p90 50 min · 955 flights
  • Wednesdays75% on time · p90 45 min · 1,074 flights
  • Tuesdays74% on time · p90 50 min · 1,060 flights
  • Mondays73% on time · p90 45 min · 1,196 flights
  • Sundays73% on time · p90 45 min · 1,128 flights
  • Fridays72% on time · p90 60 min · 1,191 flights
  • Thursdays71% on time · p90 55 min · 1,166 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.