OnTimeStats

Historical on-time performance

Austin to Aspen

812 miData through Dec 2025Source: US DOT · BTS

Flights on AUS–ASE arrive on time 66% of the time over the last 12 months.

On-time rate66%arrived within 15 min
p90 delay70 min1 in 10 flights is worse (tail risk)
Cancelled2.2%of scheduled flights

based on 93 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time66%
    Medianon time
    p9070 min
    Cancel2.2%
    Flights93

Why flights run late

Delay causes

  • Airline36%
  • Weather43%
  • Air traffic (NAS)16%
  • Late aircraft5%
  • Security0%

Most delay minutes here are attributed to Weather.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly AUS → ASE

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 63% to 66% on time.

  • Mornings66% on time · p90 65 min · 436 flights
  • Middays63% on time · p90 140 min · 94 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 54% to 75% on time.

  • Sundays75% on time · p90 30 min · 77 flights · limited
  • Wednesdays74% on time · p90 55 min · 69 flights · limited
  • Thursdays68% on time · p90 50 min · 78 flights · limited
  • Tuesdays67% on time · p90 115 min · 69 flights · limited
  • Mondays62% on time · p90 145 min · 78 flights · limited
  • Fridays59% on time · p90 80 min · 78 flights · limited
  • Saturdays54% on time · p90 145 min · 81 flights · limited
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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.