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Route on-time record

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

Miami (Miami International Airport) to Las Vegas (Harry Reid International Airport). 1,508 nonstop flights in Jun 2025 to May 2026, 73% arrived within 15 minutes and 1.1% were cancelled. The most reliable flight number was American 2010 at 8:50 AM.

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

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MIA → LAS

Miami to Las Vegas: 1,508 nonstop flights a year

On time (12 months)

73%

Cancelled

1.1%

avg delay 19 min

Best time to leave

Before 9 AM

91% on time vs 63% 3 to 6 PM

Most reliable airline

Frontier

77% chance on time

Check MIA to LAS fares

Lowest nonstop fare seen in the next two months: $154 (Frontier 4551 on 2026-11-21). 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 · American 2010

    8:50 AM → 11:04 AM5h 14m nonstop

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

    89%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    0 min
    • Arrived on time 100% of the time (11 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 91% on time; 3 to 6 PM: 63%).
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).
    • Lands inside LAS's trouble window: 51% of its 107 ground stops and delay programs started between 10 AM and 4 PM.

    Limited track record · 11 flights

    Find American 2010 fares Opens this date on Aviasales

  2. #2 · Frontier 4551

    8:42 AM → 11:26 AM5h 44m nonstop

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

    83%

    chance on time

    On time (history)
    80%
    Cancelled
    1.1%
    Avg arrival delay
    14 min
    • Arrived on time 80% 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; 3 to 6 PM: 63%).
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).
    • Lands inside LAS's trouble window: 51% of its 107 ground stops and delay programs started between 10 AM and 4 PM.

    Moderate track record · 94 flights

    Find Frontier 4551 fares Opens this date on Aviasales

  3. #3 · American 2231

    9:14 AM → 11:40 AM5h 26m nonstop

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

    77%

    chance on time

    On time (history)
    77%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 77% of the time (43 flights, Jun 2025 to May 2026).
    • Never cancelled in 43 scheduled flights.
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).
    • Lands inside LAS's trouble window: 51% of its 107 ground stops and delay programs started between 10 AM and 4 PM.

    Limited track record · 43 flights

    Find American 2231 fares Opens this date on Aviasales

  4. #4 · American 1501

    3:55 PM → 6:19 PM5h 24m nonstop

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

    70%

    chance on time

    On time (history)
    68%
    Cancelled
    0.0%
    Avg arrival delay
    28 min
    • Arrived on time 68% of the time (44 flights, Jun 2025 to May 2026).
    • Never cancelled in 44 scheduled flights.
    • Leaves in this route's least on-time window (3 to 6 PM: 63% on time; Before 9 AM: 91%).
    • Departs inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.

    Limited track record · 44 flights

    Find American 1501 fares Opens this date on Aviasales

  5. #5 · American 3135

    5:55 PM → 8:24 PM5h 29m nonstop

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

    68%

    chance on time

    On time (history)
    67%
    Cancelled
    0.0%
    Avg arrival delay
    19 min
    • Arrived on time 67% of the time (30 flights, Jun 2025 to May 2026).
    • Never cancelled in 31 scheduled flights.
    • Leaves in this route's least on-time window (3 to 6 PM: 63% on time; Before 9 AM: 91%).
    • Departs inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.

    Limited track record · 30 flights

    Find American 3135 fares Opens this date on Aviasales

  6. #6 · American 726

    8:00 PM → 10:32 PM5h 32m nonstop

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

    68%

    chance on time

    On time (history)
    66%
    Cancelled
    0.6%
    Avg arrival delay
    20 min
    • Arrived on time 66% of the time (168 flights, Jun 2025 to May 2026).
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).

    Moderate track record · 168 flights

    Find American 726 fares Opens this date on Aviasales

  7. #7 · American 2025

    8:15 PM → 10:25 PM5h 10m nonstop

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

    68%

    chance on time

    On time (history)
    70%
    Cancelled
    0.0%
    Avg arrival delay
    23 min
    • Arrived on time 70% of the time (10 flights, Jun 2025 to May 2026).
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).

    Limited track record · 10 flights

    Find American 2025 fares Opens this date on Aviasales

  8. #8 · American 3236

    5:05 PM → 7:18 PM5h 13m nonstop

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

    58%

    chance on time

    On time (history)
    47%
    Cancelled
    0.0%
    Avg arrival delay
    47 min
    • Arrived on time 47% of the time (73 flights, Jun 2025 to May 2026).
    • Never cancelled in 73 scheduled flights.
    • Leaves in this route's least on-time window (3 to 6 PM: 63% on time; Before 9 AM: 91%).
    • Departs inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.

    Moderate track record · 73 flights

    Find American 3236 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Frontier Airlines77%

    95 flights · 80% on time as flown · 1.1% cancel

  • American Airlines73%

    1,308 flights · 73% on time as flown · 1.0% cancel

On time by departure time

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

  • Before 9 AM91%

    372 flights · avg delay 7 min

  • 9 AM to noon80%

    100 flights · avg delay 10 min

  • 3 to 6 PM63%

    390 flights · avg delay 29 min

  • 6 to 9 PM67%

    452 flights · avg delay 22 min

  • After 9 PM71%

    194 flights · avg delay 20 min

Best day: Tuesday (74%). Worst: Sunday (65%).

Smarter routing

Nearby airports that run more on time

  • FLL → LAS 77% chance on time

    Fort Lauderdale Hollywood International Airport to Harry Reid International Airport · 1,071 flights a year · 21 mi from your airports · yours: 73%

    Rank flightsFares

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
70
F
76
M
65
A
81
M
67
J
57
J
59
A
69
S
70
O
79
N
77
D
77

What delays this route

  • Late-arriving aircraft39%
  • Airline (crew, maintenance, boarding)35%
  • Air traffic control and airport volume21%
  • Severe weather4%

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

Finding the most reliable connections from MIA to LAS…

MIA to LAS questions

What time of day is best to fly MIA to LAS?
Before 9 AM: 91% of flights arrived on time, against 63% for departures 3 to 6 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 MIA to LAS?
Frontier, with a season-adjusted 77% chance of operating and arriving on time over 95 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 MIA to LAS?
June (57% on time); the best was April (81%), 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.

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Live status: FAA delays and ground stops