OnTimeStats

Historical on-time performance

Eugene to Seattle

234 miData through May 2026Source: US DOT · BTS

Flights on EUG–SEA arrive on time 85% of the time over the last 12 months.

On-time rate85%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights

based on 1,912 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlinesbest
    On-time87%
    Medianon time
    p9015 min
    Cancel1.4%
    Flights1,540
  • Alaska Airlines
    On-time78%
    Medianon time
    p9035 min
    Cancel1.3%
    Flights372

Why flights run late

Delay causes

  • Airline55%
  • Weather8%
  • Air traffic (NAS)10%
  • Late aircraft27%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline26%
  • Weather41%
  • Air traffic (NAS)33%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 27 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 EUG → SEA

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 85% to 90% on time.

  • Afternoons90% on time · p90 10 min · 175 flights · limited
  • Mornings87% on time · p90 15 min · 2,098 flights
  • Evenings86% on time · p90 15 min · 969 flights
  • Middays85% on time · p90 20 min · 1,662 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 83% to 89% on time.

  • Tuesdays89% on time · p90 15 min · 709 flights
  • Saturdays88% on time · p90 15 min · 618 flights
  • Sundays87% on time · p90 15 min · 708 flights
  • Thursdays86% on time · p90 15 min · 722 flights
  • Mondays86% on time · p90 20 min · 718 flights
  • Wednesdays85% on time · p90 20 min · 710 flights
  • Fridays83% on time · p90 20 min · 719 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.