Carrier route record
AAMIA→LAX
American Airlines · Miami to Los Angeles
- Flights
- 2,751
- Period
- July 2025 to June 2026
- Share of route
- 85%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with American Airlines.
American on MIA to LAX sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 2,751 flights, with a median arrival 6 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate American on MIA to LAX from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
74.3%
Arrivals under 15 minutes late, of 2,729 completed flights
Avg delay
68 min
Across delayed arrivals only, not all flights
Cancelled
0.47%
National rate is 1.81%
Whole route
75.2%
Every carrier on MIA to LAX, 3,245 flights
These figures cover 2,751 flights between July 2025 and June 2026. Beyond the headline rate, 8.6% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
American against every carrier on MIA to LAX
American flew 2,751 of the 3,245 flights on MIA to LAX, most of the route. Its 74.3% on time is about level with the route as a whole at 75.2%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Delta at 79.9% to American at 74.3%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines | 494 | 79.9% | 77 min | 1.21% | B |
| American Airlines (this page) | 2,751 | 74.3% | 68 min | 0.47% | C+ |
Departure window
When American runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 24 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am573 flights86.5%
- 8am–11am487 flights84.3%
- 11am–2pm209 flights76.6%
- 2pm–5pm427 flights68.5%
- 5pm–8pm508 flights67.5%
- 8pm–5am547 flights62.8%
Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 62.8% on time, against 86.5% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5am–8am window is the busiest, with 573 flights scheduled in it.
Across the year
American on MIA to LAX through the year
July is the worst month at 62.9% on time, 18 points below October, the best at 81.1%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. May was the busiest month here, with 252 flights.
Across the week, Wednesday is the strongest day at 79.9% on time and Sunday the weakest at 63.3%. 17 points is a smaller lever than departure hour, but it is free.
Delay causes
Why American runs late on this route
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 48,000 reported delay minutes.
- 39%Late-arriving aircraft
- 39%Carrier
- 14%National Airspace System
- 8%Extreme weather
- 0%Security
39% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 48,000 reported delay minutes here, that single category outweighs weather by 5 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 47,568 reported delay minutes.
The largest share of delay minutes, 39%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 18,000 of the 48,000 delay minutes reported here.
Cancellations are rare at 0.47%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here costs
8.6% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
At 2,342 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The return leg is a different operation and performs like one: it runs 79.2% on time across 2,753 flights, 5 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 5 points of difference.
The sample behind these figures is 2,751 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking American on MIA to LAX
Put together: the calendar is the biggest lever here, not the carrier or the hour. October runs 81.1% on time and July 62.9%, a swing of 18 points. If the dates move at all, move them out of July before you think about anything else. 2,729 completed flights over 12 months sit behind that.
Related
Where to go next
- MIA to LAX, every carrier
- American on LAX to MIA, the return leg
- Delta Air Lines on MIA to LAX79.9%
- American Airlines network-wide record
- Miami International (MIA) delay statistics
- Los Angeles International (LAX) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.