Miami (MIA) to Los Angeles (LAX): On-Time Performance
Data through May 2026
The calendar drives reliability on MIA–LAX. February 2025 flights landed on schedule 89% of the time, but July 2024 dropped to 63% — a gap of 26 points. Across the full period the route averages 76% on-time against a national 78%. Morning departures also hold up better than evening ones (86% vs 66%), which matters most in the rough months.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 8.9
- last 12 months
- Duration
- 5h 46m
- scheduled
- Distance
- 2,342 mi
Best airline from MIA to LAX
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 85% | 13 min | 1.0% | 892 |
| American Airlines | 75% | 19 min | 0.5% | 5,523 |
Monthly on-time trend
Best time to fly from MIA to LAX
Aim for departures around 8 a.m. (87% on-time); avoid 2 p.m. departures (61%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 76% | 19 min |
| Tuesday | 78% | 16 min |
| Wednesdaybest | 79% | 17 min |
| Thursday | 77% | 19 min |
| Friday | 76% | 15 min |
| Saturday | 76% | 20 min |
| Sunday | 70% | 22 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 operations42%
- National airspace system13%
- Weather8%
Frequently asked questions
- How often are flights from MIA to LAX delayed?
- 24% of MIA–LAX 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 18 minutes.
- Which airline is most reliable from MIA to LAX?
- Delta Air Lines has the best on-time record on this route at 85%, based on 892 flights. 2 airlines flew MIA–LAX frequently enough to compare in this period.
- What is the best time of day to fly from MIA to LAX?
- Departures around 8 a.m. have the best record (87% on-time), while departures around 2 p.m. have the worst (61%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MIA to LAX?
- The scheduled MIA–LAX flight time averages 5h 46m over 2,342 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are MIA to LAX flights cancelled?
- 0.6% 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 MIA to LAX?
- July 2024 was the roughest month in this dataset, with only 63% of arrivals on time. The best was February 2025 at 89%. If your dates are flexible, that 26-point gap is worth planning around.
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Based on 6,437 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.