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Route on-time record

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

San Francisco (San Francisco International Airport) to Salt Lake City (Salt Lake City International Airport). 3,485 nonstop flights in Jun 2025 to May 2026, 78% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was Delta 1331 at 5:40 AM.

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

SFO → SLC

San Francisco to Salt Lake City: 3,485 nonstop flights a year

On time (12 months)

78%

Cancelled

0.8%

avg delay 16 min

Best time to leave

Before 9 AM

93% on time vs 69% noon to 3 PM

Most reliable airline

Delta

79% chance on time

Check SFO to SLC 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 · Delta 1331

    5:40 AM → 8:31 AM1h 52m nonstop

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

    96%

    chance on time

    On time (history)
    97%
    Cancelled
    0.5%
    Avg arrival delay
    5 min
    • Arrived on time 97% of the time (363 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; Noon to 3 PM: 69%).
    • Departs outside SFO's trouble window (7 AM to 1 PM, when 61% of its 333 ground stops and delay programs started).

    Strong track record · 363 flights

    Find Delta 1331 fares Opens this date on Aviasales

  2. #2 · SkyWest 5411 · sold as United Express, Delta Connection, American Eagle or Alaska

    8:10 AM → 11:18 AM2h 08m nonstop

    Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as SkyWest 5592; its record covers all of them.

    90%

    chance on time

    On time (history)
    92%
    Cancelled
    0.0%
    Avg arrival delay
    5 min
    • Arrived on time 92% of the time (48 flights, Jun 2025 to May 2026).
    • Never cancelled in 48 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; Noon to 3 PM: 69%).
    • Departs inside SFO's trouble window: 61% of its 333 ground stops and delay programs started between 7 AM and 1 PM.

    Limited track record · 48 flights

    Find 8:10 AM flight fares Opens this date on Aviasales

  3. #3 · SkyWest 5405 · sold as United Express, Delta Connection, American Eagle or Alaska

    8:40 AM → 11:49 AM2h 09m nonstop

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

    88%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    4 min
    • Arrived on time 100% of the time (11 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; Noon to 3 PM: 69%).
    • Departs inside SFO's trouble window: 61% of its 333 ground stops and delay programs started between 7 AM and 1 PM.
    • Short track record (11 flights), so its score leans on the airline's record at this hour.

    Limited track record · 11 flights

    Find 8:40 AM flight fares Opens this date on Aviasales

  4. #4 · United 2027

    8:45 AM → 11:43 AM1h 58m nonstop

    Local times, typical schedule. Last flown 2026-03-28.

    85%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 88% of the time (82 flights, Jun 2025 to May 2026).
    • Never cancelled in 82 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; Noon to 3 PM: 69%).
    • Departs inside SFO's trouble window: 61% of its 333 ground stops and delay programs started between 7 AM and 1 PM.

    Moderate track record · 82 flights

    Find United 2027 fares Opens this date on Aviasales

  5. #5 · SkyWest 5590 · sold as United Express, Delta Connection, American Eagle or Alaska

    6:25 PM → 9:36 PM2h 07m nonstop

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

    82%

    chance on time

    On time (history)
    83%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 83% of the time (275 flights, Jun 2025 to May 2026).
    • Never cancelled in 275 scheduled flights.
    • Departs outside SFO's trouble window (7 AM to 1 PM, when 61% of its 333 ground stops and delay programs started).

    Strong track record · 275 flights

    Find 6:25 PM flight fares Opens this date on Aviasales

  6. #6 · Delta 1991

    7:00 PM → 9:57 PM1h 57m nonstop

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

    81%

    chance on time

    On time (history)
    75%
    Cancelled
    0.0%
    Avg arrival delay
    22 min
    • Arrived on time 75% of the time (20 flights, Jun 2025 to May 2026).
    • Departs outside SFO's trouble window (7 AM to 1 PM, when 61% of its 333 ground stops and delay programs started).
    • Short track record (20 flights), so its score leans on the airline's record at this hour.

    Limited track record · 20 flights

    Find Delta 1991 fares Opens this date on Aviasales

  7. #7 · Delta 920

    9:46 AM → 12:40 PM1h 54m nonstop

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

    80%

    chance on time

    On time (history)
    81%
    Cancelled
    1.1%
    Avg arrival delay
    14 min
    • Arrived on time 81% of the time (357 flights, Jun 2025 to May 2026).
    • Departs inside SFO's trouble window: 61% of its 333 ground stops and delay programs started between 7 AM and 1 PM.
    • 67% of its delay minutes came from the plane arriving late from an earlier flight.

    Strong track record · 357 flights

    Find Delta 920 fares Opens this date on Aviasales

  8. #8 · Delta 2762

    7:15 PM → 10:07 PM1h 56m nonstop

    Local times, typical schedule. Last flown 2026-05-06.

    78%

    chance on time

    On time (history)
    79%
    Cancelled
    3.4%
    Avg arrival delay
    48 min
    • Arrived on time 79% of the time (56 flights, Jun 2025 to May 2026).
    • Cancelled 3.4% of the time (2 of 58).
    • Departs outside SFO's trouble window (7 AM to 1 PM, when 61% of its 333 ground stops and delay programs started).
    • Short track record (56 flights), so its score leans on the airline's record at this hour.

    Limited track record · 56 flights

    Find Delta 2762 fares Opens this date on Aviasales

  9. #9 · SkyWest 3272 · sold as United Express, Delta Connection, American Eagle or Alaska

    3:06 PM → 6:00 PM1h 54m nonstop

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

    77%

    chance on time

    On time (history)
    79%
    Cancelled
    0.0%
    Avg arrival delay
    13 min
    • Arrived on time 79% of the time (34 flights, Jun 2025 to May 2026).
    • Never cancelled in 34 scheduled flights.
    • Departs outside SFO's trouble window (7 AM to 1 PM, when 61% of its 333 ground stops and delay programs started).
    • 78% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 34 flights

    Find 3:06 PM flight fares Opens this date on Aviasales

  10. #10 · SkyWest 5753 · sold as United Express, Delta Connection, American Eagle or Alaska

    8:45 PM → 11:59 PM2h 07m nonstop

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

    76%

    chance on time

    On time (history)
    76%
    Cancelled
    1.1%
    Avg arrival delay
    14 min
    • Arrived on time 76% of the time (94 flights, Jun 2025 to May 2026).
    • Departs outside SFO's trouble window (7 AM to 1 PM, when 61% of its 333 ground stops and delay programs started).

    Moderate track record · 94 flights

    Find 8:45 PM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Delta Air Lines79%

    1,709 flights · 79% on time as flown · 0.8% cancel

  • United Airlines78%

    454 flights · 80% on time as flown · 0.4% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)78%

    1,163 flights · 78% on time as flown · 1.1% cancel

  • Frontier Airlines71%

    159 flights · 68% on time as flown · 0.7% cancel

On time by departure time

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

  • Before 9 AM93%

    654 flights · avg delay 5 min

  • 9 AM to noon81%

    571 flights · avg delay 14 min

  • Noon to 3 PM69%

    743 flights · avg delay 18 min

  • 3 to 6 PM71%

    786 flights · avg delay 25 min

  • 6 to 9 PM80%

    730 flights · avg delay 16 min

Best day: Tuesday (84%). Worst: Monday (76%).

Smarter routing

Nearby airports that run more on time

  • SJC → SLC 92% chance on time

    Norman Y. Mineta San Jose International Airport to Salt Lake City International Airport · 1,817 flights a year · 30 mi from your airports · yours: 78%

    Rank flightsFares

  • OAK → SLC 89% chance on time

    Oakland San Francisco Bay Airport to Salt Lake City International Airport · 1,696 flights a year · 11 mi from your airports · yours: 78%

    Rank flightsFares

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
81
F
78
M
76
A
76
M
73
J
80
J
82
A
82
S
86
O
87
N
83
D
75

What delays this route

  • Late-arriving aircraft50%
  • Airline (crew, maintenance, boarding)34%
  • Air traffic control and airport volume15%
  • Severe weather1%

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

SFO to SLC questions

What time of day is best to fly SFO to SLC?
Before 9 AM: 93% of flights arrived on time, against 69% for departures noon to 3 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 SFO to SLC?
Delta, with a season-adjusted 79% chance of operating and arriving on time over 1,709 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 SLC?
May (73% on time); the best was October (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 SFO

Live status: FAA delays and ground stops