OnTimeStats

Historical on-time performance

Las Vegas to Houston

1,235 miData through Dec 2025Source: US DOT · BTS

Flights on LAS–HOU arrive on time 77% of the time over the last 12 months.

On-time rate77%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights

based on 2,076 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time77%
    Medianon time
    p9035 min
    Cancel0.7%
    Flights2,076

Why flights run late

Delay causes

  • Airline34%
  • Weather1%
  • Air traffic (NAS)13%
  • Late aircraft52%
  • 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 LAS → 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 — 91% on time.

  • Mornings91% on time · p90 10 min · 2,431 flights
  • Middays75% on time · p90 40 min · 936 flights
  • Evenings64% on time · p90 60 min · 1,246 flights
  • Afternoons58% on time · p90 60 min · 1,174 flights
  • Overnights58% on time · p90 65 min · 435 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 68% to 83% on time.

  • Saturdays83% on time · p90 25 min · 713 flights
  • Wednesdays81% on time · p90 30 min · 836 flights
  • Tuesdays76% on time · p90 35 min · 836 flights
  • Sundays73% on time · p90 45 min · 952 flights
  • Mondays72% on time · p90 40 min · 965 flights
  • Thursdays71% on time · p90 40 min · 952 flights
  • Fridays68% on time · p90 55 min · 968 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.