OnTimeStats

Historical on-time performance

Houston to Denver

883 miData through Dec 2025Source: US DOT · BTS

Flights on HOU–DEN arrive on time 76% of the time over the last 12 months.

On-time rate76%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights

based on 2,291 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time76%
    Medianon time
    p9045 min
    Cancel1.0%
    Flights2,291

Why flights run late

Delay causes

  • Airline23%
  • Weather5%
  • Air traffic (NAS)38%
  • Late aircraft34%
  • Security0%

Most delay minutes here are attributed to Air traffic (NAS).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly HOU → DEN

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 — 91% on time.

  • Mornings91% on time · p90 10 min · 2,451 flights
  • Middays80% on time · p90 30 min · 1,667 flights
  • Overnights71% on time · p90 55 min · 1,411 flights
  • Evenings69% on time · p90 60 min · 1,171 flights
  • Afternoons69% on time · p90 55 min · 1,121 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 75% to 81% on time.

  • Saturdays81% on time · p90 35 min · 865 flights
  • Tuesdays81% on time · p90 35 min · 1,137 flights
  • Wednesdays80% on time · p90 35 min · 1,134 flights
  • Mondays78% on time · p90 35 min · 1,198 flights
  • Fridays78% on time · p90 40 min · 1,183 flights
  • Sundays77% on time · p90 40 min · 1,145 flights
  • Thursdays75% on time · p90 45 min · 1,159 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.