OnTimeStats

Historical on-time performance

Denver to Houston

883 miData through Dec 2025Source: US DOT · BTS

Flights on DEN–HOU arrive on time 72% of the time over the last 12 months.

On-time rate72%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights

based on 2,325 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time72%
    Medianon time
    p9050 min
    Cancel0.7%
    Flights2,325

Why flights run late

Delay causes

  • Airline31%
  • Weather1%
  • Air traffic (NAS)17%
  • Late aircraft51%
  • 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 → HOU

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 15 min · 2,799 flights
  • Middays76% on time · p90 35 min · 1,461 flights
  • Afternoons64% on time · p90 55 min · 1,118 flights
  • Overnights61% on time · p90 75 min · 1,050 flights
  • Evenings58% on time · p90 80 min · 1,426 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 70% to 75% on time.

  • Wednesdays75% on time · p90 40 min · 1,128 flights
  • Tuesdays74% on time · p90 45 min · 1,126 flights
  • Saturdays74% on time · p90 40 min · 827 flights
  • Mondays73% on time · p90 40 min · 1,223 flights
  • Sundays73% on time · p90 45 min · 1,156 flights
  • Fridays70% on time · p90 55 min · 1,208 flights
  • Thursdays70% on time · p90 50 min · 1,186 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.