OnTimeStats

Historical on-time performance

San Francisco to Arcata CA

250 miData through Dec 2025Source: US DOT · BTS

Flights on SFO–ACV arrive on time 78% of the time over the last 12 months.

On-time rate78%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.5%of scheduled flights

based on 1,257 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time78%
    Medianon time
    p9035 min
    Cancel1.5%
    Flights1,257

Why flights run late

Delay causes

  • Airline23%
  • Weather30%
  • Air traffic (NAS)22%
  • Late aircraft24%
  • Security0%

Most delay minutes here are attributed to Weather.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly SFO → ACV

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 73% to 81% on time.

  • Mornings81% on time · p90 30 min · 321 flights
  • Evenings81% on time · p90 45 min · 297 flights
  • Afternoons78% on time · p90 50 min · 696 flights
  • Overnights74% on time · p90 40 min · 658 flights
  • Middays73% on time · p90 60 min · 1,336 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 73% to 79% on time.

  • Tuesdays79% on time · p90 45 min · 460 flights
  • Saturdays77% on time · p90 45 min · 450 flights
  • Wednesdays77% on time · p90 40 min · 479 flights
  • Mondays76% on time · p90 40 min · 484 flights
  • Thursdays74% on time · p90 60 min · 479 flights
  • Fridays74% on time · p90 50 min · 475 flights
  • Sundays73% on time · p90 65 min · 481 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.