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Route on-time record

SMF to LGB: most on-time flights and the best time to fly

Sacramento (Sacramento International Airport) to Long Beach (Long Beach International Airport). 1,917 nonstop flights in Jun 2025 to May 2026, 86% arrived within 15 minutes and 0.3% were cancelled. The most reliable flight number was Southwest 2948 at 7:10 AM.

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

SMF → LGB

Sacramento to Long Beach: 1,917 nonstop flights a year

On time (12 months)

86%

Cancelled

0.3%

avg delay 8 min

Best time to leave

Before 9 AM

95% on time vs 75% 6 to 9 PM

Most reliable airline

Southwest

85% chance on time

Check SMF to LGB fares

Lowest nonstop fare seen in the next two months: $288 (Southwest 1195 on 2026-10-26). 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 · Southwest 2948

    7:10 AM → 8:35 AM1h 25m nonstop

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

    95%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 100% of the time (24 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 75%).
    • Short track record (24 flights), so its score leans on the airline's record at this hour.

    Limited track record · 24 flights

    Find Southwest 2948 fares Opens this date on Aviasales

  2. #2 · Southwest 1249

    6:25 AM → 7:50 AM1h 25m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    94%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    0 min
    • Arrived on time 100% of the time (23 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 75%).
    • Short track record (23 flights), so its score leans on the airline's record at this hour.

    Limited track record · 23 flights

    Find Southwest 1249 fares Opens this date on Aviasales

  3. #3 · Southwest 4345

    10:00 AM → 11:25 AM1h 25m nonstop

    Local times, typical schedule. Last flown 2026-05-29.

    94%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    0 min
    • Arrived on time 100% of the time (23 flights, Jun 2025 to May 2026).
    • Short track record (23 flights), so its score leans on the airline's record at this hour.

    Limited track record · 23 flights

    Find Southwest 4345 fares Opens this date on Aviasales

  4. #4 · Southwest 4344

    6:10 AM → 7:35 AM1h 25m nonstop

    Local times, typical schedule. Last flown 2026-05-30.

    93%

    chance on time

    On time (history)
    97%
    Cancelled
    0.0%
    Avg arrival delay
    2 min
    • Arrived on time 97% of the time (31 flights, Jun 2025 to May 2026).
    • Never cancelled in 31 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 75%).
    • Short track record (31 flights), so its score leans on the airline's record at this hour.

    Limited track record · 31 flights

    Find Southwest 4344 fares Opens this date on Aviasales

  5. #5 · Southwest 2486

    9:50 AM → 11:15 AM1h 25m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    89%

    chance on time

    On time (history)
    95%
    Cancelled
    5.0%
    Avg arrival delay
    2 min
    • Arrived on time 95% of the time (19 flights, Jun 2025 to May 2026).
    • Short track record (19 flights), so its score leans on the airline's record at this hour.

    Limited track record · 19 flights

    Find Southwest 2486 fares Opens this date on Aviasales

  6. #6 · Southwest 3698

    9:10 AM → 10:35 AM1h 25m nonstop

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

    87%

    chance on time

    On time (history)
    92%
    Cancelled
    7.7%
    Avg arrival delay
    8 min
    • Arrived on time 92% of the time (12 flights, Jun 2025 to May 2026).
    • Short track record (12 flights), so its score leans on the airline's record at this hour.

    Limited track record · 12 flights

    Find Southwest 3698 fares Opens this date on Aviasales

  7. #7 · Southwest 4347

    4:30 PM → 5:55 PM1h 25m nonstop

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

    85%

    chance on time

    On time (history)
    85%
    Cancelled
    0.0%
    Avg arrival delay
    5 min
    • Arrived on time 85% of the time (54 flights, Jun 2025 to May 2026).
    • Never cancelled in 54 scheduled flights.
    • Short track record (54 flights), so its score leans on the airline's record at this hour.

    Limited track record · 54 flights

    Find Southwest 4347 fares Opens this date on Aviasales

  8. #8 · Southwest 2049

    1:30 PM → 2:55 PM1h 25m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    83%

    chance on time

    On time (history)
    82%
    Cancelled
    0.0%
    Avg arrival delay
    14 min
    • Arrived on time 82% of the time (28 flights, Jun 2025 to May 2026).
    • 58% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (28 flights), so its score leans on the airline's record at this hour.

    Limited track record · 28 flights

    Find Southwest 2049 fares Opens this date on Aviasales

  9. #9 · Southwest 4485

    4:20 PM → 5:45 PM1h 25m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    82%

    chance on time

    On time (history)
    79%
    Cancelled
    0.0%
    Avg arrival delay
    5 min
    • Arrived on time 79% of the time (28 flights, Jun 2025 to May 2026).
    • Short track record (28 flights), so its score leans on the airline's record at this hour.

    Limited track record · 28 flights

    Find Southwest 4485 fares Opens this date on Aviasales

  10. #10 · Southwest 2306

    12:50 PM → 2:15 PM1h 25m nonstop

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

    81%

    chance on time

    On time (history)
    78%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 78% of the time (55 flights, Jun 2025 to May 2026).
    • Never cancelled in 55 scheduled flights.
    • Short track record (55 flights), so its score leans on the airline's record at this hour.

    Limited track record · 55 flights

    Find Southwest 2306 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Southwest Airlines85%

    1,917 flights · 86% on time as flown · 0.3% cancel

On time by departure time

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

  • Before 9 AM95%

    468 flights · avg delay 5 min

  • 9 AM to noon92%

    365 flights · avg delay 6 min

  • Noon to 3 PM83%

    342 flights · avg delay 9 min

  • 3 to 6 PM81%

    438 flights · avg delay 10 min

  • 6 to 9 PM75%

    304 flights · avg delay 11 min

Best day: Tuesday (91%). Worst: Friday (82%).

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
90
F
89
M
87
A
86
M
85
J
82
J
83
A
87
S
88
O
87
N
87
D
86

What delays this route

  • Late-arriving aircraft66%
  • Airline (crew, maintenance, boarding)22%
  • Air traffic control and airport volume11%

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

SMF to LGB questions

What time of day is best to fly SMF to LGB?
Before 9 AM: 95% of flights arrived on time, against 75% 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 SMF to LGB?
Southwest, with a season-adjusted 85% chance of operating and arriving on time over 1,917 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 SMF to LGB?
June (82% on time); the best was January (90%), 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 SMF

Live status: FAA delays and ground stops