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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.

DAL → LAS

Dallas to Las Vegas: 2,881 nonstop flights a year

On time (12 months)

76%

Cancelled

1.2%

avg delay 13 min

Best time to leave

Before 9 AM

93% on time vs 51% after 9 PM

Most reliable airline

Southwest

75% chance on time

Check DAL to LAS fares

Lowest nonstop fare seen in the next two months: $63 (Southwest 2799 on 2026-11-22). 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 1539

    6:15 AM → 7:10 AM2h 55m nonstop

    Local times, typical schedule. Last flown 2026-05-29. Same departure also flew as Southwest 2162; its record covers all of them.

    95%

    chance on time

    On time (history)
    98%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 98% of the time (58 flights, Jun 2025 to May 2026).
    • Never cancelled in 58 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; After 9 PM: 51%).
    • Departs outside DAL's trouble window (10 AM to 4 PM, when 67% of its 42 ground stops and delay programs started).

    Limited track record · 58 flights

    Find Southwest 1539 fares Opens this date on Aviasales

  2. #2 · Southwest 2011

    6:00 AM → 7:05 AM3h 05m nonstop

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

    92%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 100% of the time (13 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; After 9 PM: 51%).
    • Departs outside DAL's trouble window (10 AM to 4 PM, when 67% of its 42 ground stops and delay programs started).
    • Short track record (13 flights), so its score leans on the airline's record at this hour.

    Limited track record · 13 flights

    Find Southwest 2011 fares Opens this date on Aviasales

  3. #3 · Southwest 967

    8:40 AM → 9:45 AM3h 05m nonstop

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

    90%

    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: 93% on time; After 9 PM: 51%).
    • Departs outside DAL's trouble window (10 AM to 4 PM, when 67% of its 42 ground stops and delay programs started).
    • Short track record (23 flights), so its score leans on the airline's record at this hour.

    Limited track record · 23 flights

    Find Southwest 967 fares Opens this date on Aviasales

  4. #4 · Southwest 1541

    7:25 AM → 8:20 AM2h 55m nonstop

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

    89%

    chance on time

    On time (history)
    96%
    Cancelled
    0.0%
    Avg arrival delay
    2 min
    • Arrived on time 96% of the time (23 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; After 9 PM: 51%).
    • Departs outside DAL's trouble window (10 AM to 4 PM, when 67% of its 42 ground stops and delay programs started).
    • Short track record (23 flights), so its score leans on the airline's record at this hour.

    Limited track record · 23 flights

    Find Southwest 1541 fares Opens this date on Aviasales

  5. #5 · Southwest 1542

    9:10 AM → 10:10 AM2h 58m nonstop

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

    88%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    4 min
    • Arrived on time 91% of the time (46 flights, Jun 2025 to May 2026).
    • Never cancelled in 46 scheduled flights.
    • Departs outside DAL's trouble window (10 AM to 4 PM, when 67% of its 42 ground stops and delay programs started).
    • Lands inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.

    Limited track record · 46 flights

    Find Southwest 1542 fares Opens this date on Aviasales

  6. #6 · Southwest 143

    7:15 AM → 8:10 AM2h 55m nonstop

    Local times, typical schedule. Last flown 2026-05-30. Same departure also flew as Southwest 2163; its record covers all of them.

    86%

    chance on time

    On time (history)
    87%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 87% of the time (23 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; After 9 PM: 51%).
    • Departs outside DAL's trouble window (10 AM to 4 PM, when 67% of its 42 ground stops and delay programs started).
    • Short track record (23 flights), so its score leans on the airline's record at this hour.

    Limited track record · 23 flights

    Find Southwest 143 fares Opens this date on Aviasales

  7. #7 · Southwest 3188

    10:20 AM → 11:15 AM2h 55m nonstop

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

    82%

    chance on time

    On time (history)
    82%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 82% of the time (55 flights, Jun 2025 to May 2026).
    • Never cancelled in 55 scheduled flights.
    • Departs inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
    • Lands inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.

    Limited track record · 55 flights

    Find Southwest 3188 fares Opens this date on Aviasales

  8. #8 · Southwest 3395

    10:40 AM → 11:45 AM3h 05m nonstop

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

    81%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    6 min
    • Arrived on time 88% of the time (33 flights, Jun 2025 to May 2026).
    • Never cancelled in 33 scheduled flights.
    • Departs inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
    • Lands inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.

    Limited track record · 33 flights

    Find Southwest 3395 fares Opens this date on Aviasales

  9. #9 · Southwest 4616

    11:00 AM → 11:55 AM2h 55m nonstop

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

    79%

    chance on time

    On time (history)
    63%
    Cancelled
    0.0%
    Avg arrival delay
    12 min
    • Arrived on time 63% of the time (8 flights, Jun 2025 to May 2026).
    • Departs inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
    • Lands inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
    • Short track record (8 flights), so its score leans on the airline's record at this hour.

    Limited track record · 8 flights

    Find Southwest 4616 fares Opens this date on Aviasales

  10. #10 · Southwest 3973

    5:15 PM → 6:20 PM3h 05m nonstop

    Local times, typical schedule. Last flown 2026-04-01.

    77%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    3 min
    • Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
    • Departs outside DAL's trouble window (10 AM to 4 PM, when 67% of its 42 ground stops and delay programs started).
    • Short track record (8 flights), so its score leans on the airline's record at this hour.

    Limited track record · 8 flights

    Find Southwest 3973 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Southwest Airlines75%

    2,881 flights · 76% on time as flown · 1.2% cancel

On time by departure time

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

  • Before 9 AM93%

    658 flights · avg delay 4 min

  • 9 AM to noon83%

    595 flights · avg delay 9 min

  • Noon to 3 PM75%

    480 flights · avg delay 14 min

  • 3 to 6 PM68%

    483 flights · avg delay 19 min

  • 6 to 9 PM64%

    484 flights · avg delay 21 min

  • After 9 PM51%

    181 flights · avg delay 25 min

Best day: Wednesday (81%). Worst: Thursday (73%).

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