OnTimeStats

Historical on-time performance

Des Moines to Los Angeles

1,447 miData through May 2026Source: US DOT · BTS

Flights on DSM–LAX arrive on time 72% of the time over the last 12 months.

On-time rate72%arrived within 15 min
p90 delay75 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights

based on 187 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time72%
    Medianon time
    p9075 min
    Cancel0.5%
    Flights187

Why flights run late

Delay causes

  • Airline87%
  • Weather1%
  • Air traffic (NAS)5%
  • Late aircraft7%
  • Security0%

Most delay minutes here are attributed to Airline.

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 1 cancellations with a reported cause (BTS reports causes from June 2003).

Over time

On-time trend

By season

On-time rate by month

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.