Los Angeles (LAX) to Miami (MIA): On-Time Performance
Data through May 2026
When you fly LAX to MIA matters as much as anything else about the booking: the route swung from 93% on-time in November 2024 to just 66% in March 2026. Across the full period the route averages 79% on-time against a national 78%.
- On-time
- 79%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 0.7%
- Flights/day
- 8.9
- last 12 months
- Duration
- 5h 2m
- scheduled
- Distance
- 2,342 mi
Best airline from LAX to MIA
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 79% | 16 min | 0.6% | 5,528 |
| Delta Air Lines | 76% | 13 min | 1.0% | 893 |
Monthly on-time trend
Best time to fly from LAX to MIA
Aim for departures around 6 a.m. (87% on-time); avoid 12 p.m. departures (70%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 79% | 14 min |
| Tuesdaybest | 84% | 9 min |
| Wednesday | 81% | 14 min |
| Thursday | 78% | 18 min |
| Friday | 78% | 18 min |
| Saturday | 76% | 14 min |
| Sunday | 76% | 20 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft37%
- Airline operations40%
- National airspace system21%
- Weather2%
Frequently asked questions
- How often are flights from LAX to MIA delayed?
- 21% of LAX–MIA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 15 minutes.
- Which airline is most reliable from LAX to MIA?
- American Airlines has the best on-time record on this route at 79%, based on 5,528 flights. 2 airlines flew LAX–MIA frequently enough to compare in this period.
- What is the best time of day to fly from LAX to MIA?
- Departures around 6 a.m. have the best record (87% on-time), while departures around 12 p.m. have the worst (70%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from LAX to MIA?
- The scheduled LAX–MIA flight time averages 5h 2m over 2,342 miles. Actual arrival times vary — flights on this route land 15+ minutes late 21% of the time.
- How often are LAX to MIA flights cancelled?
- 0.7% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from LAX to MIA?
- March 2026 was the roughest month in this dataset, with only 66% of arrivals on time. The best was November 2024 at 93%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 6,442 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.