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ATIS Alerts Smart Flight Search

Find the flight least likely to be delayed

Beta

We rank real flight numbers by how often they flew and arrived on time over the last 12 months, adjusted for your travel month and departure time, then check nearby airports and calmer connections. US airlines and airports.

LAS → LAX

Las Vegas to Los Angeles: 8,424 nonstop flights a year

On time (12 months)

79%

Cancelled

0.7%

avg delay 14 min

Best time to leave

Before 9 AM

91% on time vs 66% after 9 PM

Most reliable airline

Spirit

86% chance on time

Check LAS to LAX fares

Lowest nonstop fare seen in the next two months: $18 (Frontier 3291 on 2026-11-04). 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 · United 2039

    6:00 AM → 7:20 AM1h 20m nonstop

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

    96%

    chance on time

    On time (history)
    96%
    Cancelled
    0.4%
    Avg arrival delay
    2 min
    • Arrived on time 96% of the time (272 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 91% on time; After 9 PM: 66%).
    • Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).

    Strong track record · 272 flights

    Find United 2039 fares Opens this date on Aviasales

  2. #2 · Delta 553

    6:08 AM → 7:25 AM1h 14m nonstop

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

    93%

    chance on time

    On time (history)
    94%
    Cancelled
    0.5%
    Avg arrival delay
    4 min
    • Arrived on time 94% of the time (363 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 91% on time; After 9 PM: 66%).
    • Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).

    Strong track record · 363 flights

    Find Delta 553 fares Opens this date on Aviasales

  3. #3 · Spirit 1636

    1:53 PM → 3:06 PM1h 13m nonstop

    Local times, typical schedule. Last flown 2026-04-13.

    90%

    chance on time

    On time (history)
    94%
    Cancelled
    1.0%
    Avg arrival delay
    7 min
    • Arrived on time 94% of the time (95 flights, Jun 2025 to May 2026).
    • Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.

    Moderate track record · 95 flights

    Find Spirit 1636 fares Opens this date on Aviasales

  4. #4 · Southwest 1478

    5:35 AM → 6:50 AM1h 15m nonstop

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

    89%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    0 min
    • Arrived on time 100% of the time (25 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 91% on time; After 9 PM: 66%).
    • Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
    • Short track record (25 flights), so its score leans on the airline's record at this hour.

    Limited track record · 25 flights

    Find Southwest 1478 fares Opens this date on Aviasales

  5. #5 · United 2212

    10:45 AM → 12:05 PM1h 20m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 2316; its record covers all of them.

    88%

    chance on time

    On time (history)
    89%
    Cancelled
    0.0%
    Avg arrival delay
    7 min
    • Arrived on time 89% of the time (105 flights, Jun 2025 to May 2026).
    • Never cancelled in 105 scheduled flights.
    • Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.

    Moderate track record · 105 flights

    Find United 2212 fares Opens this date on Aviasales

  6. #6 · SkyWest 6425 · sold as United Express, Delta Connection, American Eagle or Alaska

    10:23 AM → 11:45 AM1h 22m nonstop

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

    87%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    41 min
    • Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
    • Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
    • 99% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (11 flights), so its score leans on the airline's record at this hour.

    Limited track record · 11 flights

    Find 10:23 AM flight fares Opens this date on Aviasales

  7. #7 · Delta 2253

    9:50 AM → 11:02 AM1h 12m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Delta 2293; its record covers all of them.

    87%

    chance on time

    On time (history)
    89%
    Cancelled
    3.4%
    Avg arrival delay
    6 min
    • Arrived on time 89% of the time (114 flights, Jun 2025 to May 2026).
    • Cancelled 3.4% of the time (4 of 118).
    • Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).

    Moderate track record · 114 flights

    Find Delta 2253 fares Opens this date on Aviasales

  8. #8 · United 2667

    8:00 AM → 9:20 AM1h 20m nonstop

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

    87%

    chance on time

    On time (history)
    87%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 87% of the time (90 flights, Jun 2025 to May 2026).
    • Never cancelled in 90 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 91% on time; After 9 PM: 66%).
    • Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).

    Moderate track record · 90 flights

    Find United 2667 fares Opens this date on Aviasales

  9. #9 · Spirit 310

    2:59 PM → 4:22 PM1h 23m nonstop

    Local times, typical schedule. Last flown 2026-05-01.

    85%

    chance on time

    On time (history)
    86%
    Cancelled
    0.0%
    Avg arrival delay
    12 min
    • Arrived on time 86% of the time (14 flights, Jun 2025 to May 2026).
    • Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
    • Lands inside LAX's trouble window: 53% of its 15 ground stops and delay programs started between 4 PM and 10 PM.
    • Short track record (14 flights), so its score leans on the airline's record at this hour.

    Limited track record · 14 flights

    Find Spirit 310 fares Opens this date on Aviasales

  10. #10 · Spirit 1640

    7:55 AM → 9:06 AM1h 11m nonstop

    Local times, typical schedule. Last flown 2026-04-13.

    85%

    chance on time

    On time (history)
    86%
    Cancelled
    2.1%
    Avg arrival delay
    10 min
    • Arrived on time 86% of the time (94 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 91% on time; After 9 PM: 66%).
    • Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).

    Moderate track record · 94 flights

    Find Spirit 1640 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Spirit Airlines86%

    737 flights · 87% on time as flown · 0.9% cancel

  • United Airlines85%

    1,562 flights · 86% on time as flown · 0.7% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)83%

    297 flights · 85% on time as flown · 1.3% cancel

  • Delta Air Lines82%

    1,738 flights · 83% on time as flown · 0.8% cancel

  • Frontier Airlines80%

    575 flights · 80% on time as flown · 0.3% cancel

  • American Airlines75%

    1,103 flights · 76% on time as flown · 0.8% cancel

  • Southwest Airlines68%

    2,395 flights · 68% on time as flown · 0.4% cancel

On time by departure time

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

  • Before 9 AM91%

    1,967 flights · avg delay 6 min

  • 9 AM to noon82%

    1,673 flights · avg delay 14 min

  • Noon to 3 PM79%

    1,505 flights · avg delay 15 min

  • 3 to 6 PM70%

    1,066 flights · avg delay 20 min

  • 6 to 9 PM70%

    1,887 flights · avg delay 18 min

  • After 9 PM66%

    326 flights · avg delay 18 min

Best day: Tuesday (85%). Worst: Sunday (71%).

Smarter routing

Nearby airports that run more on time

  • LAS → SNA 82% chance on time

    Harry Reid International Airport to John Wayne Orange County International Airport · 4,387 flights a year · 36 mi from your airports · yours: 78%

    Rank flightsFares

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