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Route on-time record

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

Salt Lake City (Salt Lake City International Airport) to San Diego (San Diego International Airport). 2,919 nonstop flights in Jun 2025 to May 2026, 84% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was SkyWest 3018 at 8:05 AM.

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

SLC → SAN

Salt Lake City to San Diego: 2,919 nonstop flights a year

On time (12 months)

84%

Cancelled

0.8%

avg delay 10 min

Best time to leave

Before 9 AM

93% on time vs 74% 6 to 9 PM

Most reliable airline

SkyWest

86% chance on time

Check SLC to SAN 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 3018 · sold as United Express, Delta Connection, American Eagle or Alaska

    8:05 AM → 9:19 AM2h 14m nonstop

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

    92%

    chance on time

    On time (history)
    94%
    Cancelled
    0.0%
    Avg arrival delay
    4 min
    • Arrived on time 94% of the time (192 flights, Jun 2025 to May 2026).
    • Never cancelled in 194 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 74%).
    • Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.

    Moderate track record · 192 flights

    Find 8:05 AM flight fares Opens this date on Aviasales

  2. #2 · Delta 1177

    7:45 AM → 8:45 AM2h 00m nonstop

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

    92%

    chance on time

    On time (history)
    92%
    Cancelled
    0.8%
    Avg arrival delay
    4 min
    • Arrived on time 92% of the time (360 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 74%).
    • Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.

    Strong track record · 360 flights

    Find Delta 1177 fares Opens this date on Aviasales

  3. #3 · SkyWest 3312 · sold as United Express, Delta Connection, American Eagle or Alaska

    7:17 AM → 8:24 AM2h 07m nonstop

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

    91%

    chance on time

    On time (history)
    90%
    Cancelled
    0.0%
    Avg arrival delay
    5 min
    • Arrived on time 90% of the time (30 flights, Jun 2025 to May 2026).
    • Never cancelled in 30 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 74%).
    • Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.

    Limited track record · 30 flights

    Find 7:17 AM flight fares Opens this date on Aviasales

  4. #4 · Delta 1202

    10:45 PM → 11:48 PM1h 59m nonstop

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

    84%

    chance on time

    On time (history)
    84%
    Cancelled
    0.8%
    Avg arrival delay
    11 min
    • Arrived on time 84% of the time (360 flights, Jun 2025 to May 2026).

    Strong track record · 360 flights

    Find Delta 1202 fares Opens this date on Aviasales

  5. #5 · Delta 1296

    11:25 AM → 12:08 PM1h 58m nonstop

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

    84%

    chance on time

    On time (history)
    85%
    Cancelled
    0.8%
    Avg arrival delay
    9 min
    • Arrived on time 85% of the time (362 flights, Jun 2025 to May 2026).

    Strong track record · 362 flights

    Find Delta 1296 fares Opens this date on Aviasales

  6. #6 · Delta 1252

    5:40 PM → 6:35 PM1h 55m nonstop

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

    83%

    chance on time

    On time (history)
    84%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 84% of the time (254 flights, Jun 2025 to May 2026).
    • Never cancelled in 256 scheduled flights.

    Strong track record · 254 flights

    Find Delta 1252 fares Opens this date on Aviasales

  7. #7 · SkyWest 3116 · sold as United Express, Delta Connection, American Eagle or Alaska

    6:52 PM → 7:55 PM2h 03m nonstop

    Local times, typical schedule. Last flown 2026-03-17.

    82%

    chance on time

    On time (history)
    85%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 85% of the time (34 flights, Jun 2025 to May 2026).
    • Never cancelled in 34 scheduled flights.
    • Leaves in this route's least on-time window (6 to 9 PM: 74% on time; Before 9 AM: 93%).
    • Short track record (34 flights), so its score leans on the airline's record at this hour.

    Limited track record · 34 flights

    Find 6:52 PM flight fares Opens this date on Aviasales

  8. #8 · SkyWest 3020 · sold as United Express, Delta Connection, American Eagle or Alaska

    3:00 PM → 4:09 PM2h 09m nonstop

    Local times, typical schedule. Last flown 2026-05-11.

    82%

    chance on time

    On time (history)
    85%
    Cancelled
    4.3%
    Avg arrival delay
    7 min
    • Arrived on time 85% of the time (66 flights, Jun 2025 to May 2026).
    • Cancelled 4.3% of the time (3 of 70).

    Moderate track record · 66 flights

    Find 3:00 PM flight fares Opens this date on Aviasales

  9. #9 · Frontier 1901

    7:02 PM → 8:01 PM1h 59m nonstop

    Local times, typical schedule. Last flown 2026-05-04.

    82%

    chance on time

    On time (history)
    83%
    Cancelled
    1.5%
    Avg arrival delay
    9 min
    • Arrived on time 83% of the time (135 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 74% on time; Before 9 AM: 93%).

    Moderate track record · 135 flights

    Find Frontier 1901 fares Opens this date on Aviasales

  10. #10 · SkyWest 3019 · sold as United Express, Delta Connection, American Eagle or Alaska

    12:00 PM → 1:09 PM2h 12m nonstop

    Local times, typical schedule. Last flown 2026-04-21.

    81%

    chance on time

    On time (history)
    82%
    Cancelled
    2.3%
    Avg arrival delay
    14 min
    • Arrived on time 82% of the time (173 flights, Jun 2025 to May 2026).

    Moderate track record · 173 flights

    Find 12:00 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)86%

    636 flights · 87% on time as flown · 1.0% cancel

  • Delta Air Lines84%

    1,732 flights · 85% on time as flown · 0.6% cancel

  • Frontier Airlines82%

    142 flights · 83% on time as flown · 1.4% cancel

  • Southwest Airlines76%

    408 flights · 75% on time as flown · 0.4% cancel

On time by departure time

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

  • Before 9 AM93%

    638 flights · avg delay 4 min

  • 9 AM to noon82%

    779 flights · avg delay 10 min

  • Noon to 3 PM83%

    154 flights · avg delay 11 min

  • 3 to 6 PM79%

    825 flights · avg delay 13 min

  • 6 to 9 PM74%

    179 flights · avg delay 14 min

  • After 9 PM86%

    344 flights · avg delay 10 min

Best day: Tuesday (87%). Worst: Friday (78%).

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
83
F
81
M
84
A
86
M
87
J
78
J
78
A
78
S
82
O
82
N
85
D
81

What delays this route

  • Airline (crew, maintenance, boarding)38%
  • Late-arriving aircraft34%
  • Air traffic control and airport volume25%
  • Severe weather4%

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

SLC to SAN questions

What time of day is best to fly SLC to SAN?
Before 9 AM: 93% of flights arrived on time, against 74% for departures 6 to 9 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 SLC to SAN?
SkyWest, with a season-adjusted 86% chance of operating and arriving on time over 636 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 SLC to SAN?
June (78% on time); the best was May (87%), 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.

More routes from SLC

Live status: FAA delays and ground stops