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Route on-time record

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

Las Vegas (Harry Reid International Airport) to San Diego (San Diego International Airport). 6,131 nonstop flights in Jun 2025 to May 2026, 68% arrived within 15 minutes and 1.1% were cancelled. The most reliable flight number was Southwest 2408 at 6:10 AM.

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

LAS → SAN

Las Vegas to San Diego: 6,131 nonstop flights a year

On time (12 months)

68%

Cancelled

1.1%

avg delay 19 min

Best time to leave

Before 9 AM

84% on time vs 55% 6 to 9 PM

Most reliable airline

Spirit

74% chance on time

Check LAS to SAN fares

Lowest nonstop fare seen in the next two months: $88 (Frontier 1469 on 2026-10-29). 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 2408

    6:10 AM → 7:25 AM1h 15m nonstop

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

    90%

    chance on time

    On time (history)
    95%
    Cancelled
    0.0%
    Avg arrival delay
    3 min
    • Arrived on time 95% 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: 84% on time; 6 to 9 PM: 55%).
    • Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).

    Limited track record · 39 flights

    Find Southwest 2408 fares Opens this date on Aviasales

  2. #2 · Southwest 2055

    7:00 AM → 8:15 AM1h 15m nonstop

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

    87%

    chance on time

    On time (history)
    97%
    Cancelled
    0.0%
    Avg arrival delay
    2 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: 84% on time; 6 to 9 PM: 55%).
    • Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).

    Limited track record · 33 flights

    Find Southwest 2055 fares Opens this date on Aviasales

  3. #3 · Southwest 2814

    6:25 AM → 7:40 AM1h 15m nonstop

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

    85%

    chance on time

    On time (history)
    83%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 83% of the time (24 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 6 to 9 PM: 55%).
    • Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
    • Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.

    Limited track record · 24 flights

    Find Southwest 2814 fares Opens this date on Aviasales

  4. #4 · SkyWest 3012 · sold as United Express, Delta Connection, American Eagle or Alaska

    8:20 AM → 9:51 AM1h 31m nonstop

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

    84%

    chance on time

    On time (history)
    93%
    Cancelled
    0.0%
    Avg arrival delay
    2 min
    • Arrived on time 93% of the time (29 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 6 to 9 PM: 55%).
    • Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
    • Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.

    Limited track record · 29 flights

    Find 8:20 AM flight fares Opens this date on Aviasales

  5. #5 · Southwest 2739

    7:40 AM → 8:55 AM1h 15m nonstop

    Local times, typical schedule. Last flown 2026-05-27.

    81%

    chance on time

    On time (history)
    86%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 86% of the time (14 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 6 to 9 PM: 55%).
    • Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
    • Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.

    Limited track record · 14 flights

    Find Southwest 2739 fares Opens this date on Aviasales

  6. #6 · Southwest 123

    9:05 AM → 10:20 AM1h 15m nonstop

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

    80%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    4 min
    • Arrived on time 88% of the time (41 flights, Jun 2025 to May 2026).
    • Never cancelled in 41 scheduled flights.
    • Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
    • Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.

    Limited track record · 41 flights

    Find Southwest 123 fares Opens this date on Aviasales

  7. #7 · SkyWest 3741 · sold as United Express, Delta Connection, American Eagle or Alaska

    12:59 PM → 2:24 PM1h 22m nonstop

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

    79%

    chance on time

    On time (history)
    80%
    Cancelled
    0.0%
    Avg arrival delay
    17 min
    • Arrived on time 80% of the time (321 flights, Jun 2025 to May 2026).
    • Never cancelled in 321 scheduled flights.
    • Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.

    Strong track record · 321 flights

    Find 12:59 PM flight fares Opens this date on Aviasales

  8. #8 · Southwest 3644

    5:55 AM → 7:10 AM1h 15m nonstop

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

    79%

    chance on time

    On time (history)
    93%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 93% of the time (15 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 6 to 9 PM: 55%).
    • Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
    • Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.

    Limited track record · 15 flights

    Find Southwest 3644 fares Opens this date on Aviasales

  9. #9 · Southwest 2011

    7:55 AM → 9:15 AM1h 20m nonstop

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

    79%

    chance on time

    On time (history)
    79%
    Cancelled
    0.0%
    Avg arrival delay
    13 min
    • Arrived on time 79% of the time (28 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 6 to 9 PM: 55%).
    • Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
    • Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.

    Limited track record · 28 flights

    Find Southwest 2011 fares Opens this date on Aviasales

  10. #10 · Southwest 3445

    7:15 AM → 8:30 AM1h 15m nonstop

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

    79%

    chance on time

    On time (history)
    74%
    Cancelled
    0.0%
    Avg arrival delay
    13 min
    • Arrived on time 74% of the time (23 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 6 to 9 PM: 55%).
    • Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
    • Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.

    Limited track record · 23 flights

    Find Southwest 3445 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Spirit Airlines74%

    347 flights · 78% on time as flown · 1.1% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)73%

    1,654 flights · 75% on time as flown · 1.3% cancel

  • Frontier Airlines65%

    403 flights · 66% on time as flown · 1.6% cancel

  • Southwest Airlines64%

    3,726 flights · 64% on time as flown · 0.9% cancel

On time by departure time

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

  • Before 9 AM84%

    1,405 flights · avg delay 9 min

  • 9 AM to noon65%

    1,156 flights · avg delay 18 min

  • Noon to 3 PM67%

    941 flights · avg delay 18 min

  • 3 to 6 PM64%

    1,235 flights · avg delay 23 min

  • 6 to 9 PM55%

    915 flights · avg delay 30 min

  • After 9 PM61%

    479 flights · avg delay 27 min

Best day: Tuesday (80%). Worst: Friday (61%).

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
78
F
74
M
69
A
70
M
67
J
65
J
62
A
69
S
70
O
65
N
73
D
73

What delays this route

  • Late-arriving aircraft35%
  • Airline (crew, maintenance, boarding)32%
  • Air traffic control and airport volume30%
  • Severe weather2%

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

LAS to SAN questions

What time of day is best to fly LAS to SAN?
Before 9 AM: 84% of flights arrived on time, against 55% 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 LAS to SAN?
Spirit, with a season-adjusted 74% chance of operating and arriving on time over 347 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 LAS to SAN?
July (62% on time); the best was January (78%), 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 LAS

Live status: FAA delays and ground stops