Route on-time record
LAS to MIA: most on-time flights and the best time to fly
Las Vegas (Harry Reid International Airport) to Miami (Miami International Airport). 1,502 nonstop flights in Jun 2025 to May 2026, 80% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was American 2404 at 6:18 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
LAS → MIA
Las Vegas to Miami: 1,502 nonstop flights a year
On time (12 months)
80%
Cancelled
0.9%
avg delay 18 min
Best time to leave
Before 9 AM
86% on time vs 74% 9 AM to noon
Most reliable airline
American
82% chance on time
Lowest nonstop fare seen in the next two months: $125 (Frontier 4552 on 2026-11-26). 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 · American 2404
6:18 AM → 2:10 PM4h 52m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 19 min
- Arrived on time 85% of the time (73 flights, Jun 2025 to May 2026).
- Never cancelled in 73 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 9 AM to noon: 74%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 107 ground stops and delay programs started).
Moderate track record · 73 flights
Find American 2404 fares Opens this date on Aviasales#2 · American 2238
10:20 PM → 6:00 AM4h 40m nonstop
Local times, typical schedule. Last flown 2026-05-20.
85%
chance on time
- On time (history)
- 97%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 97% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 107 ground stops and delay programs started).
Limited track record · 31 flights
Find American 2238 fares Opens this date on Aviasales#3 · American 1297
7:00 AM → 2:48 PM4h 48m nonstop
Local times, typical schedule. Last flown 2026-05-20.
85%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 86% of the time (73 flights, Jun 2025 to May 2026).
- Never cancelled in 74 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 9 AM to noon: 74%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 107 ground stops and delay programs started).
Moderate track record · 73 flights
Find American 1297 fares Opens this date on Aviasales#4 · American 3318
11:30 PM → 7:20 AM4h 50m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 3027; its record covers all of them.
83%
chance on time
- On time (history)
- 82%
- Cancelled
- 1.1%
- Avg arrival delay
- 26 min
- Arrived on time 82% of the time (171 flights, Jun 2025 to May 2026).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 107 ground stops and delay programs started).
Moderate track record · 171 flights
Find American 3318 fares Opens this date on Aviasales#5 · American 1105
12:10 PM → 8:18 PM5h 08m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 100% of the time (11 flights, Jun 2025 to May 2026).
- Departs 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 1105 fares Opens this date on Aviasales#6 · American 2231
1:08 PM → 9:00 PM4h 52m nonstop
Local times, typical schedule. Last flown 2026-05-20.
78%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 82% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- Departs inside LAS's trouble window: 51% of its 107 ground stops and delay programs started between 10 AM and 4 PM.
Limited track record · 44 flights
Find American 2231 fares Opens this date on Aviasales#7 · Frontier 4552
11:06 PM → 7:00 AM4h 43m nonstop
Local times, typical schedule. Last flown 2026-05-31.
68%
chance on time
- On time (history)
- 64%
- Cancelled
- 0.0%
- Avg arrival delay
- 17 min
- Arrived on time 64% of the time (92 flights, Jun 2025 to May 2026).
- Never cancelled in 92 scheduled flights.
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 107 ground stops and delay programs started).
Moderate track record · 92 flights
Find Frontier 4552 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- American Airlines82%
1,308 flights · 83% on time as flown · 1.0% cancel
- Frontier Airlines71%
92 flights · 64% on time as flown · 0.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM86%
427 flights · avg delay 15 min
- 9 AM to noon74%
70 flights · avg delay 14 min
- Noon to 3 PM76%
377 flights · avg delay 22 min
- After 9 PM80%
628 flights · avg delay 18 min
Best day: Tuesday (83%). Worst: Sunday (74%).
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.
What delays this route
- Airline (crew, maintenance, boarding)53%
- Late-arriving aircraft31%
- Air traffic control and airport volume12%
- 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
LAS to MIA questions
- What time of day is best to fly LAS to MIA?
- Before 9 AM: 86% of flights arrived on time, against 74% for departures 9 AM to noon. 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 MIA?
- American, with a season-adjusted 82% chance of operating and arriving on time over 1,308 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 MIA?
- June (64% on time); the best was November (88%), 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
- MIA to LAS (return)
- LAS to LAX 79%
- LAS to DEN 77%
- LAS to SAN 68%
- LAS to PHX 78%
- LAS to SFO 66%
- LAS to SEA 82%
- LAS to ORD 77%
- LAS to DFW 81%
- LAS to ATL 84%
- LAS to SNA 82%
- LAS to SMF 79%
- LAS to BUR 80%
Most on-time flights from LAS on every route →
Live status: FAA delays and ground stops