OnTimeStats

Historical on-time performance

Seattle to Pasco

172 miData through May 2026Source: US DOT · BTS

Flights on SEA–PSC arrive on time 83% of the time over the last 12 months.

On-time rate83%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights

based on 1,810 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlinesbest
    On-time83%
    Medianon time
    p9030 min
    Cancel0.7%
    Flights1,607
  • Alaska Airlines
    On-time75%
    Medianon time
    p9030 min
    Cancel2.5%
    Flights203

Why flights run late

Delay causes

  • Airline50%
  • Weather20%
  • Air traffic (NAS)9%
  • Late aircraft20%
  • Security1%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline19%
  • Weather38%
  • Air traffic (NAS)44%
  • Security0%

Most cancellations here are attributed to Air traffic (NAS). Shares are among 16 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 SEA → PSC

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 75% to 87% on time.

  • Mornings87% on time · p90 20 min · 1,446 flights
  • Afternoons84% on time · p90 25 min · 1,283 flights
  • Overnights81% on time · p90 30 min · 1,670 flights
  • Evenings75% on time · p90 30 min · 927 flights
  • Middays75% on time · p90 35 min · 616 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 79% to 84% on time.

  • Wednesdays84% on time · p90 25 min · 834 flights
  • Tuesdays84% on time · p90 25 min · 842 flights
  • Saturdays83% on time · p90 25 min · 739 flights
  • Mondays82% on time · p90 25 min · 888 flights
  • Fridays80% on time · p90 30 min · 894 flights
  • Sundays80% on time · p90 35 min · 861 flights
  • Thursdays79% on time · p90 30 min · 884 flights

Keep exploring

Related pages

Delay predictorfor this route→SEA airportSeattle→PSC airportPasco→SkyWest Airlinesairline profile→Alaska Airlinesairline profile→Horizon Airairline profile→Seasonal delay patternsguide→

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.