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Route on-time record

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

San Jose (Norman Y. Mineta San Jose International Airport) to Long Beach (Long Beach International Airport). 1,222 nonstop flights in Jun 2025 to May 2026, 86% arrived within 15 minutes and 0.2% were cancelled. The most reliable flight number was Southwest 2759 at 7:00 AM.

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

SJC → LGB

San Jose to Long Beach: 1,222 nonstop flights a year

On time (12 months)

86%

Cancelled

0.2%

avg delay 8 min

Best time to leave

Before 9 AM

96% on time vs 68% 6 to 9 PM

Most reliable airline

Southwest

85% chance on time

Check SJC to LGB 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 · Southwest 2759

    7:00 AM → 8:15 AM1h 15m nonstop

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

    94%

    chance on time

    On time (history)
    97%
    Cancelled
    0.0%
    Avg arrival delay
    5 min
    • Arrived on time 97% of the time (33 flights, Jun 2025 to May 2026).
    • Never cancelled in 33 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 96% on time; 6 to 9 PM: 68%).
    • Short track record (33 flights), so its score leans on the airline's record at this hour.

    Limited track record · 33 flights

    Find Southwest 2759 fares Opens this date on Aviasales

  2. #2 · Southwest 4248

    11:05 AM → 12:25 PM1h 20m nonstop

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

    93%

    chance on time

    On time (history)
    96%
    Cancelled
    0.0%
    Avg arrival delay
    2 min
    • Arrived on time 96% 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 4248 fares Opens this date on Aviasales

  3. #3 · Southwest 4247

    6:50 AM → 8:10 AM1h 20m nonstop

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

    93%

    chance on time

    On time (history)
    96%
    Cancelled
    0.0%
    Avg arrival delay
    3 min
    • Arrived on time 96% of the time (54 flights, Jun 2025 to May 2026).
    • Never cancelled in 54 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 96% on time; 6 to 9 PM: 68%).
    • Short track record (54 flights), so its score leans on the airline's record at this hour.

    Limited track record · 54 flights

    Find Southwest 4247 fares Opens this date on Aviasales

  4. #4 · Southwest 4020

    6:30 AM → 7:50 AM1h 20m nonstop

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

    91%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    0 min
    • Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 96% on time; 6 to 9 PM: 68%).
    • Short track record (8 flights), so its score leans on the airline's record at this hour.

    Limited track record · 8 flights

    Find Southwest 4020 fares Opens this date on Aviasales

  5. #5 · Southwest 3760

    10:35 AM → 11:55 AM1h 20m nonstop

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

    89%

    chance on time

    On time (history)
    93%
    Cancelled
    0.0%
    Avg arrival delay
    6 min
    • Arrived on time 93% 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 3760 fares Opens this date on Aviasales

  6. #6 · Southwest 4249

    2:00 PM → 3:20 PM1h 20m nonstop

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

    85%

    chance on time

    On time (history)
    90%
    Cancelled
    0.0%
    Avg arrival delay
    7 min
    • Arrived on time 90% of the time (39 flights, Jun 2025 to May 2026).
    • Never cancelled in 39 scheduled flights.
    • Short track record (39 flights), so its score leans on the airline's record at this hour.

    Limited track record · 39 flights

    Find Southwest 4249 fares Opens this date on Aviasales

  7. #7 · Southwest 3344

    2:10 PM → 3:25 PM1h 15m nonstop

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

    82%

    chance on time

    On time (history)
    85%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 85% of the time (13 flights, Jun 2025 to May 2026).
    • Short track record (13 flights), so its score leans on the airline's record at this hour.

    Limited track record · 13 flights

    Find Southwest 3344 fares Opens this date on Aviasales

  8. #8 · Southwest 2339

    5:05 PM → 6:25 PM1h 20m nonstop

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

    81%

    chance on time

    On time (history)
    79%
    Cancelled
    0.0%
    Avg arrival delay
    14 min
    • Arrived on time 79% of the time (28 flights, Jun 2025 to May 2026).
    • 72% 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 2339 fares Opens this date on Aviasales

  9. #9 · Southwest 3648

    7:45 PM → 9:05 PM1h 20m nonstop

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

    76%

    chance on time

    On time (history)
    85%
    Cancelled
    0.0%
    Avg arrival delay
    5 min
    • Arrived on time 85% of the time (20 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 68% on time; Before 9 AM: 96%).
    • Short track record (20 flights), so its score leans on the airline's record at this hour.

    Limited track record · 20 flights

    Find Southwest 3648 fares Opens this date on Aviasales

  10. #10 · Southwest 2724

    7:15 PM → 8:30 PM1h 15m nonstop

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

    67%

    chance on time

    On time (history)
    65%
    Cancelled
    0.0%
    Avg arrival delay
    12 min
    • Arrived on time 65% of the time (54 flights, Jun 2025 to May 2026).
    • Never cancelled in 54 scheduled flights.
    • Leaves in this route's least on-time window (6 to 9 PM: 68% on time; Before 9 AM: 96%).
    • 77% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 54 flights

    Find Southwest 2724 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Southwest Airlines85%

    1,222 flights · 86% on time as flown · 0.2% cancel

On time by departure time

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

  • Before 9 AM96%

    343 flights · avg delay 4 min

  • 9 AM to noon91%

    227 flights · avg delay 4 min

  • Noon to 3 PM83%

    215 flights · avg delay 11 min

  • 3 to 6 PM82%

    237 flights · avg delay 9 min

  • 6 to 9 PM68%

    200 flights · avg delay 14 min

Best day: Wednesday (91%). Worst: Friday (84%).

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
92
F
89
M
91
A
88
M
90
J
83
J
84
A
85
S
87
O
81
N
91
D
87

What delays this route

  • Late-arriving aircraft67%
  • Airline (crew, maintenance, boarding)23%
  • Air traffic control and airport volume9%

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

SJC to LGB questions

What time of day is best to fly SJC to LGB?
Before 9 AM: 96% of flights arrived on time, against 68% 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 SJC to LGB?
Southwest, with a season-adjusted 85% chance of operating and arriving on time over 1,222 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 SJC to LGB?
October (81% on time); the best was January (92%), 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 SJC

Live status: FAA delays and ground stops