ATIS Alerts Smart Flight Search
Find the flight least likely to be delayed
BetaWe 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.
LAX → MIA
Los Angeles to Miami: 3,249 nonstop flights a year
On time (12 months)
78%
Cancelled
0.7%
avg delay 16 min
Best time to leave
Before 9 AM
87% on time vs 72% 3 to 6 PM
Most reliable airline
American
78% chance on time
Lowest nonstop fare seen in the next two months: $192 (American 1729 on 2026-11-23). 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 315
6:00 AM → 2:11 PM5h 11m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 621; its record covers all of them.
90%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.4%
- Avg arrival delay
- 5 min
- Arrived on time 91% of the time (272 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 3 to 6 PM: 72%).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
- Lands inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 272 flights
Find American 315 fares Opens this date on Aviasales#2 · American 3253
7:20 AM → 3:31 PM5h 11m nonstop
Local times, typical schedule. Last flown 2026-05-20.
87%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 22 min
- Arrived on time 93% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 3 to 6 PM: 72%).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
Limited track record · 44 flights
Find American 3253 fares Opens this date on Aviasales#3 · American 345
8:00 AM → 4:03 PM5h 03m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.5%
- Avg arrival delay
- 11 min
- Arrived on time 85% of the time (205 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 3 to 6 PM: 72%).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
- Lands inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 205 flights
Find American 345 fares Opens this date on Aviasales#4 · American 1480
11:03 AM → 7:16 PM5h 13m nonstop
Local times, typical schedule. Last flown 2026-05-20.
81%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 91% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
- Short track record (44 flights), so its score leans on the airline's record at this hour.
Limited track record · 44 flights
Find American 1480 fares Opens this date on Aviasales#5 · American 1526
10:59 PM → 7:03 AM5h 04m nonstop
Local times, typical schedule. Last flown 2026-05-19.
81%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 91% of the time (43 flights, Jun 2025 to May 2026).
- Never cancelled in 43 scheduled flights.
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
- Short track record (43 flights), so its score leans on the airline's record at this hour.
Limited track record · 43 flights
Find American 1526 fares Opens this date on Aviasales#6 · American 340
9:41 PM → 5:42 AM5h 01m nonstop
Local times, typical schedule. Last flown 2026-05-19.
79%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 80% of the time (136 flights, Jun 2025 to May 2026).
- Never cancelled in 136 scheduled flights.
- Departs inside LAX's trouble window: 53% of its 15 ground stops and delay programs started between 4 PM and 10 PM.
Moderate track record · 136 flights
Find American 340 fares Opens this date on Aviasales#7 · American 1086
2:15 PM → 10:21 PM5h 06m nonstop
Local times, typical schedule. Last flown 2026-04-06.
79%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.0%
- Avg arrival delay
- 17 min
- Arrived on time 73% of the time (30 flights, Jun 2025 to May 2026).
- Never cancelled in 30 scheduled flights.
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
- Short track record (30 flights), so its score leans on the airline's record at this hour.
Limited track record · 30 flights
Find American 1086 fares Opens this date on Aviasales#8 · American 999
1:30 PM → 9:23 PM4h 53m nonstop
Local times, typical schedule. Last flown 2026-03-26.
78%
chance on time
- On time (history)
- 68%
- Cancelled
- 0.0%
- Avg arrival delay
- 48 min
- Arrived on time 68% of the time (19 flights, Jun 2025 to May 2026).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
- 68% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (19 flights), so its score leans on the airline's record at this hour.
Limited track record · 19 flights
Find American 999 fares Opens this date on Aviasales#9 · American 3013
1:51 PM → 10:00 PM5h 09m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 84%
- Cancelled
- 0.0%
- Avg arrival delay
- 23 min
- Arrived on time 84% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
- 54% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 55 flights
Find American 3013 fares Opens this date on Aviasales#10 · American 2777
11:59 PM → 8:03 AM5h 04m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as American 2735; its record covers all of them.
77%
chance on time
- On time (history)
- 78%
- Cancelled
- 0.4%
- Avg arrival delay
- 17 min
- Arrived on time 78% of the time (222 flights, Jun 2025 to May 2026).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
Strong track record · 222 flights
Find American 2777 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- American Airlines78%
2,755 flights · 79% on time as flown · 0.6% cancel
- Delta Air Lines73%
494 flights · 73% on time as flown · 1.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM87%
729 flights · avg delay 11 min
- 9 AM to noon73%
753 flights · avg delay 19 min
- Noon to 3 PM77%
495 flights · avg delay 18 min
- 3 to 6 PM72%
116 flights · avg delay 27 min
- After 9 PM76%
1,145 flights · avg delay 15 min
Best day: Tuesday (83%). Worst: Saturday (76%).
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