OnTimeStats

Historical on-time performance

San Francisco to Eugene

451 miData through Dec 2025Source: US DOT · BTS

Flights on SFO–EUG 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)
Cancelled0.2%of scheduled flights

based on 882 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Too close to call — no single carrier is clearly more on-time here.

  • United Airlines
    On-time83%
    Medianon time
    p9035 min
    Cancel0.3%
    Flights756
  • SkyWest Airlines
    On-time82%
    Medianon time
    p9025 min
    Cancel0.0%
    Flights126

Why flights run late

Delay causes

  • Airline40%
  • Weather0%
  • Air traffic (NAS)11%
  • Late aircraft49%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly SFO → EUG

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

Afternoons are the most reliable time of day to fly this route — 87% on time.

  • Afternoons87% on time · p90 20 min · 548 flights
  • Middays83% on time · p90 35 min · 1,171 flights
  • Evenings79% on time · p90 60 min · 413 flights
  • Overnights77% on time · p90 35 min · 739 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 79% to 86% on time.

  • Saturdays86% on time · p90 25 min · 405 flights
  • Tuesdays84% on time · p90 20 min · 406 flights
  • Fridays81% on time · p90 40 min · 411 flights
  • Wednesdays81% on time · p90 30 min · 414 flights
  • Sundays80% on time · p90 30 min · 415 flights
  • Thursdays80% on time · p90 35 min · 407 flights
  • Mondays79% on time · p90 40 min · 414 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.