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Route on-time record

SAN to EUG: most on-time flights and the best time to fly

San Diego (San Diego International Airport) to Eugene (Eugene Airport). 363 nonstop flights in Jun 2025 to May 2026, 81% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was SkyWest 3421 at 8:14 PM.

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

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SAN → EUG

San Diego to Eugene: 363 nonstop flights a year

On time (12 months)

81%

Cancelled

0.8%

avg delay 9 min

Best time to leave

Before 9 AM

86% on time vs 75% 3 to 6 PM

Most reliable airline

Southwest

82% chance on time

Check SAN to EUG fares

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 3421 · sold as United Express, Delta Connection, American Eagle or Alaska

    8:14 PM → 10:54 PM2h 40m nonstop

    Local times, typical schedule. Last flown 2026-05-12.

    87%

    chance on time

    On time (history)
    95%
    Cancelled
    0.0%
    Avg arrival delay
    2 min
    • Arrived on time 95% of the time (21 flights, Jun 2025 to May 2026).
    • Departs outside SAN's trouble window (6 AM to noon, when 66% of its 166 ground stops and delay programs started).

    Limited track record · 21 flights

    Find 8:14 PM flight fares Opens this date on Aviasales

  2. #2 · Southwest 1821

    8:55 AM → 11:30 AM2h 35m nonstop

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

    83%

    chance on time

    On time (history)
    85%
    Cancelled
    0.0%
    Avg arrival delay
    5 min
    • Arrived on time 85% of the time (39 flights, Jun 2025 to May 2026).
    • Never cancelled in 39 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 86% on time; 3 to 6 PM: 75%).
    • Departs inside SAN's trouble window: 66% of its 166 ground stops and delay programs started between 6 AM and noon.

    Limited track record · 39 flights

    Find Southwest 1821 fares Opens this date on Aviasales

  3. #3 · SkyWest 3112 · sold as United Express, Delta Connection, American Eagle or Alaska

    9:30 AM → 12:12 PM2h 42m nonstop

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

    83%

    chance on time

    On time (history)
    89%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 89% of the time (19 flights, Jun 2025 to May 2026).
    • Departs inside SAN's trouble window: 66% of its 166 ground stops and delay programs started between 6 AM and noon.

    Limited track record · 19 flights

    Find 9:30 AM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Southwest Airlines82%

    83 flights · 86% on time as flown · 0.5% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)80%

    207 flights · 82% on time as flown · 0.6% cancel

On time by departure time

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

  • Before 9 AM86%

    91 flights · avg delay 9 min

  • 9 AM to noon82%

    57 flights · avg delay 10 min

  • Noon to 3 PM77%

    124 flights · avg delay 9 min

  • 3 to 6 PM75%

    70 flights · avg delay 11 min

Best day: Wednesday (88%). Worst: Sunday (69%).

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
51
F
65
M
80
A
86
M
89
J
73
J
75
A
76
S
76
O
76
N
74
D
78

What delays this route

  • Late-arriving aircraft65%
  • Airline (crew, maintenance, boarding)18%
  • Air traffic control and airport volume16%
  • Security1%

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 SAN to EUG…

SAN to EUG questions

What time of day is best to fly SAN to EUG?
Before 9 AM: 86% of flights arrived on time, against 75% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from SAN to EUG?
Southwest, with a season-adjusted 82% chance of operating and arriving on time over 83 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 SAN to EUG?
January (51% on time); the best was May (89%), 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