OnTimeStats

Historical on-time performance

Seattle to Eugene

234 miData through Dec 2025Source: US DOT · BTS

Flights on SEA–EUG arrive on time 81% of the time over the last 12 months.

On-time rate81%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights

based on 1,943 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlinesbest
    On-time85%
    Medianon time
    p9020 min
    Cancel0.9%
    Flights1,494
  • Alaska Airlines
    On-time65%
    Medianon time
    p9050 min
    Cancel0.9%
    Flights449

Why flights run late

Delay causes

  • Airline37%
  • Weather11%
  • Air traffic (NAS)15%
  • Late aircraft36%
  • Security1%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly SEA → EUG

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 76% to 89% on time.

  • Mornings89% on time · p90 15 min · 1,078 flights
  • Afternoons87% on time · p90 20 min · 891 flights
  • Overnights83% on time · p90 25 min · 1,450 flights
  • Middays79% on time · p90 30 min · 791 flights
  • Evenings76% on time · p90 35 min · 546 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 82% to 85% on time.

  • Tuesdays85% on time · p90 20 min · 691 flights
  • Saturdays85% on time · p90 25 min · 584 flights
  • Wednesdays84% on time · p90 25 min · 693 flights
  • Mondays84% on time · p90 20 min · 700 flights
  • Fridays83% on time · p90 25 min · 694 flights
  • Sundays82% on time · p90 30 min · 695 flights
  • Thursdays82% on time · p90 25 min · 699 flights
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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.