OnTimeStats

Historical on-time performance

Aspen to Los Angeles

737 miData through May 2026Source: US DOT · BTS

Flights on ASE–LAX arrive on time 67% of the time over the last 12 months.

On-time rate67%arrived within 15 min
p90 delay95 min1 in 10 flights is worse (tail risk)
Cancelled6.5%of scheduled flights

based on 1,252 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time67%
    Medianon time
    p9095 min
    Cancel6.5%
    Flights1,252

Why flights run late

Delay causes

  • Airline29%
  • Weather38%
  • Air traffic (NAS)21%
  • Late aircraft12%
  • Security0%

Most delay minutes here are attributed to Weather.

When flights don't go

Why flights were cancelled

  • Airline4%
  • Weather96%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 82 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 ASE → LAX

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 66% to 79% on time.

  • Overnights79% on time · p90 35 min · 336 flights
  • Mornings77% on time · p90 35 min · 305 flights
  • Evenings68% on time · p90 80 min · 721 flights
  • Afternoons66% on time · p90 95 min · 268 flights
  • Middays66% on time · p90 95 min · 1,810 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 61% to 76% on time.

  • Wednesdays76% on time · p90 45 min · 479 flights
  • Tuesdays76% on time · p90 55 min · 435 flights
  • Thursdays69% on time · p90 70 min · 501 flights
  • Sundays66% on time · p90 85 min · 509 flights
  • Mondays66% on time · p90 85 min · 499 flights
  • Fridays66% on time · p90 95 min · 505 flights
  • Saturdays61% on time · p90 130 min · 512 flights

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.