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Route on-time record

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

Salt Lake City (Salt Lake City International Airport) to Las Vegas (Harry Reid International Airport). 3,754 nonstop flights in Jun 2025 to May 2026, 78% arrived within 15 minutes and 0.6% were cancelled. The most reliable flight number was Southwest 2283 at 6:05 AM.

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

SLC → LAS

Salt Lake City to Las Vegas: 3,754 nonstop flights a year

On time (12 months)

78%

Cancelled

0.6%

avg delay 15 min

Best time to leave

Before 9 AM

95% on time vs 71% noon to 3 PM

Most reliable airline

Delta

80% chance on time

Check SLC to LAS 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 2283

    6:05 AM → 6:30 AM1h 25m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 378; 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 (80 flights, Jun 2025 to May 2026).
    • Never cancelled in 80 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; Noon to 3 PM: 71%).

    Moderate track record · 80 flights

    Find Southwest 2283 fares Opens this date on Aviasales

  2. #2 · Delta 1698

    7:50 AM → 8:20 AM1h 29m nonstop

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

    92%

    chance on time

    On time (history)
    93%
    Cancelled
    0.8%
    Avg arrival delay
    5 min
    • Arrived on time 93% of the time (358 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; Noon to 3 PM: 71%).

    Strong track record · 358 flights

    Find Delta 1698 fares Opens this date on Aviasales

  3. #3 · Delta 1662

    11:25 PM → 11:55 PM1h 26m nonstop

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

    80%

    chance on time

    On time (history)
    80%
    Cancelled
    0.3%
    Avg arrival delay
    11 min
    • Arrived on time 80% of the time (362 flights, Jun 2025 to May 2026).

    Strong track record · 362 flights

    Find Delta 1662 fares Opens this date on Aviasales

  4. #4 · Delta 1659

    11:40 AM → 12:07 PM1h 26m nonstop

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

    77%

    chance on time

    On time (history)
    77%
    Cancelled
    0.5%
    Avg arrival delay
    15 min
    • Arrived on time 77% of the time (363 flights, Jun 2025 to May 2026).
    • Lands inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.

    Strong track record · 363 flights

    Find Delta 1659 fares Opens this date on Aviasales

  5. #5 · Frontier 2575

    1:32 PM → 2:03 PM1h 36m nonstop

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

    77%

    chance on time

    On time (history)
    79%
    Cancelled
    0.9%
    Avg arrival delay
    23 min
    • Arrived on time 79% of the time (222 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (Noon to 3 PM: 71% on time; Before 9 AM: 95%).
    • Lands inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.

    Strong track record · 222 flights

    Find Frontier 2575 fares Opens this date on Aviasales

  6. #6 · Southwest 1101

    10:55 AM → 11:25 AM1h 30m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 2206; its record covers all of them.

    76%

    chance on time

    On time (history)
    78%
    Cancelled
    0.0%
    Avg arrival delay
    11 min
    • Arrived on time 78% of the time (77 flights, Jun 2025 to May 2026).
    • Never cancelled in 77 scheduled flights.
    • Lands inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.

    Moderate track record · 77 flights

    Find Southwest 1101 fares Opens this date on Aviasales

  7. #7 · Delta 1690

    5:40 PM → 6:08 PM1h 26m nonstop

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

    76%

    chance on time

    On time (history)
    75%
    Cancelled
    0.0%
    Avg arrival delay
    14 min
    • Arrived on time 75% of the time (155 flights, Jun 2025 to May 2026).
    • Never cancelled in 155 scheduled flights.

    Moderate track record · 155 flights

    Find Delta 1690 fares Opens this date on Aviasales

  8. #8 · Frontier 4695

    5:51 PM → 6:26 PM1h 35m nonstop

    Local times, typical schedule. Last flown 2026-05-02.

    76%

    chance on time

    On time (history)
    87%
    Cancelled
    0.0%
    Avg arrival delay
    30 min
    • Arrived on time 87% of the time (15 flights, Jun 2025 to May 2026).
    • 95% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (15 flights), so its score leans on the airline's record at this hour.

    Limited track record · 15 flights

    Find Frontier 4695 fares Opens this date on Aviasales

  9. #9 · Delta 1672

    3:25 PM → 3:49 PM1h 27m nonstop

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

    75%

    chance on time

    On time (history)
    75%
    Cancelled
    0.8%
    Avg arrival delay
    17 min
    • Arrived on time 75% of the time (362 flights, Jun 2025 to May 2026).
    • Lands inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.

    Strong track record · 362 flights

    Find Delta 1672 fares Opens this date on Aviasales

  10. #10 · Southwest 4297

    8:40 PM → 9:10 PM1h 30m nonstop

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

    72%

    chance on time

    On time (history)
    79%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 79% of the time (53 flights, Jun 2025 to May 2026).
    • Never cancelled in 54 scheduled flights.
    • Short track record (53 flights), so its score leans on the airline's record at this hour.

    Limited track record · 53 flights

    Find Southwest 4297 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Delta Air Lines80%

    1,712 flights · 80% on time as flown · 0.6% cancel

  • Frontier Airlines77%

    502 flights · 78% on time as flown · 0.9% cancel

  • Southwest Airlines75%

    1,442 flights · 75% on time as flown · 0.5% cancel

  • Spirit Airlines73%

    91 flights · 69% on time as flown · 1.2% cancel

On time by departure time

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

  • Before 9 AM95%

    725 flights · avg delay 3 min

  • 9 AM to noon79%

    744 flights · avg delay 12 min

  • Noon to 3 PM71%

    353 flights · avg delay 15 min

  • 3 to 6 PM72%

    892 flights · avg delay 20 min

  • 6 to 9 PM72%

    483 flights · avg delay 23 min

  • After 9 PM74%

    557 flights · avg delay 21 min

Best day: Saturday (84%). Worst: Friday (69%).

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
79
F
76
M
73
A
77
M
79
J
72
J
70
A
76
S
76
O
78
N
82
D
81

What delays this route

  • Late-arriving aircraft37%
  • Airline (crew, maintenance, boarding)33%
  • Air traffic control and airport volume27%
  • Severe weather3%

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

SLC to LAS questions

What time of day is best to fly SLC to LAS?
Before 9 AM: 95% of flights arrived on time, against 71% for departures noon to 3 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 SLC to LAS?
Delta, with a season-adjusted 80% chance of operating and arriving on time over 1,712 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 SLC to LAS?
July (70% on time); the best was November (82%), 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 SLC

Live status: FAA delays and ground stops