OnTimeStats

Historical on-time performance

Houston to Colorado Springs

809 miData through May 2026Source: US DOT · BTS

Flights on IAH–COS arrive on time 73% of the time over the last 12 months.

On-time rate73%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights

based on 219 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time73%
    Medianon time
    p9055 min
    Cancel0.9%
    Flights219

Why flights run late

Delay causes

  • Airline30%
  • Weather30%
  • Air traffic (NAS)21%
  • Late aircraft19%
  • Security0%

Most delay minutes here are attributed to Weather.

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather100%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 2 cancellations with a reported cause (BTS reports causes from June 2003).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly IAH → COS

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 72% to 79% on time.

  • Mornings79% on time · p90 55 min · 239 flights
  • Overnights73% on time · p90 50 min · 390 flights
  • Evenings72% on time · p90 60 min · 394 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 69% to 78% on time.

  • Tuesdays78% on time · p90 35 min · 151 flights · limited
  • Mondays77% on time · p90 55 min · 153 flights · limited
  • Wednesdays75% on time · p90 50 min · 153 flights · limited
  • Sundays75% on time · p90 60 min · 134 flights · limited
  • Saturdays74% on time · p90 60 min · 134 flights · limited
  • Thursdays70% on time · p90 55 min · 155 flights · limited
  • Fridays69% on time · p90 60 min · 154 flights · limited

Keep exploring

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.