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Route on-time record

SFO to ACV: most on-time flights and the best time to fly

San Francisco (San Francisco International Airport) to Arcata/Eureka (California Redwood Coast-Humboldt County Airport). 1,289 nonstop flights in Jun 2025 to May 2026, 78% arrived within 15 minutes and 1.8% were cancelled. The most reliable flight number was SkyWest 5626 at 9:22 PM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

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SFO → ACV

San Francisco to Arcata/Eureka: 1,289 nonstop flights a year

On time (12 months)

78%

Cancelled

1.8%

avg delay 19 min

Best time to leave

After 9 PM

81% on time vs 75% 6 to 9 PM

Most reliable airline

SkyWest

76% chance on time

Check SFO to ACV fares

Lowest nonstop fare seen in the next two months: $147 (United 1227 on 2026-10-27). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

  1. #1 · SkyWest 5626 · sold as United Express, Delta Connection, American Eagle or Alaska

    9:22 PM → 10:51 PM1h 29m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    78%

    chance on time

    On time (history)
    78%
    Cancelled
    9.1%
    Avg arrival delay
    11 min
    • Arrived on time 78% of the time (9 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (After 9 PM: 81% on time; 6 to 9 PM: 75%).
    • Departs outside SFO's trouble window (7 AM to 1 PM, when 60% of its 334 ground stops and delay programs started).

    Limited track record · 9 flights

    Find 9:22 PM flight fares Opens this date on Aviasales

  2. #2 · SkyWest 4715 · sold as United Express, Delta Connection, American Eagle or Alaska

    2:08 PM → 3:40 PM1h 30m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    76%

    chance on time

    On time (history)
    77%
    Cancelled
    2.4%
    Avg arrival delay
    17 min
    • Arrived on time 77% of the time (275 flights, Jun 2025 to May 2026).
    • Departs outside SFO's trouble window (7 AM to 1 PM, when 60% of its 334 ground stops and delay programs started).

    Strong track record · 275 flights

    Find 2:08 PM flight fares Opens this date on Aviasales

  3. #3 · SkyWest 4708 · sold as United Express, Delta Connection, American Eagle or Alaska

    10:26 AM → 11:53 AM1h 27m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    76%

    chance on time

    On time (history)
    78%
    Cancelled
    0.5%
    Avg arrival delay
    16 min
    • Arrived on time 78% of the time (352 flights, Jun 2025 to May 2026).
    • Departs inside SFO's trouble window: 60% of its 334 ground stops and delay programs started between 7 AM and 1 PM.

    Strong track record · 352 flights

    Find 10:26 AM flight fares Opens this date on Aviasales

  4. #4 · SkyWest 5480 · sold as United Express, Delta Connection, American Eagle or Alaska

    4:22 PM → 5:57 PM1h 35m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    76%

    chance on time

    On time (history)
    78%
    Cancelled
    2.7%
    Avg arrival delay
    17 min
    • Arrived on time 78% of the time (250 flights, Jun 2025 to May 2026).
    • Departs outside SFO's trouble window (7 AM to 1 PM, when 60% of its 334 ground stops and delay programs started).

    Strong track record · 250 flights

    Find 4:22 PM flight fares Opens this date on Aviasales

  5. #5 · SkyWest 4695 · sold as United Express, Delta Connection, American Eagle or Alaska

    8:59 PM → 10:30 PM1h 31m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    75%

    chance on time

    On time (history)
    77%
    Cancelled
    1.7%
    Avg arrival delay
    28 min
    • Arrived on time 77% of the time (330 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 75% on time; After 9 PM: 81%).
    • Departs outside SFO's trouble window (7 AM to 1 PM, when 60% of its 334 ground stops and delay programs started).

    Strong track record · 330 flights

    Find 8:59 PM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)76%

    1,289 flights · 78% on time as flown · 1.8% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • 9 AM to noon78%

    365 flights · avg delay 16 min

  • Noon to 3 PM79%

    302 flights · avg delay 16 min

  • 3 to 6 PM78%

    263 flights · avg delay 16 min

  • 6 to 9 PM75%

    237 flights · avg delay 30 min

  • After 9 PM81%

    122 flights · avg delay 24 min

Best day: Tuesday (81%). Worst: Sunday (75%).

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

J
80
F
74
M
81
A
82
M
77
J
82
J
81
A
75
S
77
O
80
N
75
D
77

What delays this route

  • Airline (crew, maintenance, boarding)32%
  • Severe weather24%
  • Air traffic control and airport volume23%
  • Late-arriving aircraft22%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

Finding the most reliable connections from SFO to ACV…

SFO to ACV questions

What time of day is best to fly SFO to ACV?
After 9 PM: 81% of flights arrived on time, against 75% for departures 6 to 9 PM.
Which airline is most on time from SFO to ACV?
SkyWest, with a season-adjusted 76% chance of operating and arriving on time over 1,289 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on SFO to ACV?
February (74% on time); the best was June (82%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?
No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

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Live status: FAA delays and ground stops