OnTimeStats

Historical on-time performance

Las Vegas to Colorado Springs

604 miData through Dec 2025Source: US DOT · BTS

Flights on LAS–COS arrive on time 78% of the time over the last 12 months.

On-time rate78%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights

based on 864 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time78%
    Medianon time
    p9035 min
    Cancel0.5%
    Flights864

Why flights run late

Delay causes

  • Airline27%
  • Weather1%
  • Air traffic (NAS)12%
  • Late aircraft59%
  • 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 → COS

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 · 648 flights
  • Middays82% on time · p90 25 min · 482 flights
  • Evenings79% on time · p90 35 min · 371 flights
  • Overnights64% on time · p90 55 min · 705 flights
  • Afternoons60% on time · p90 60 min · 637 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 68% to 85% on time.

  • Saturdays85% on time · p90 25 min · 260 flights
  • Tuesdays81% on time · p90 25 min · 393 flights
  • Wednesdays78% on time · p90 30 min · 393 flights
  • Mondays74% on time · p90 40 min · 466 flights
  • Thursdays70% on time · p90 45 min · 461 flights
  • Fridays69% on time · p90 60 min · 470 flights
  • Sundays68% on time · p90 45 min · 400 flights
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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.