Carrier route record
AALAX→MIA
American Airlines · Los Angeles to Miami
- Flights
- 2,753
- 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 LAX to MIA lands a B+, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 2,753 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 LAX to MIA from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
79.2%
Arrivals under 15 minutes late, of 2,731 completed flights
Avg delay
73 min
Across delayed arrivals only, not all flights
Cancelled
0.58%
National rate is 1.81%
Whole route
78.4%
Every carrier on LAX to MIA, 3,248 flights
These figures cover 2,753 flights between July 2025 and June 2026. The median arrival is 6 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Carrier by carrier
American against every carrier on LAX to MIA
American flew 2,753 of the 3,248 flights on LAX to MIA, most of the route. Its 79.2% on time is about level with the route as a whole at 78.4%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from American at 79.2% to Delta at 73.7%.
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 |
|---|---|---|---|---|---|
| American Airlines (this page) | 2,753 | 79.2% | 73 min | 0.58% | B+ |
| Delta Air Lines | 495 | 73.7% | 54 min | 1.21% | 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 15 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–8am467 flights89.0%
- 8am–11am474 flights79.2%
- 11am–2pm470 flights74.2%
- 2pm–5pm311 flights74.7%
- 5pm–8pm—
- 8pm–5am1,031 flights78.4%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 74.2% on time against 89.0% for 5am–8am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 8pm–5am window is the busiest, with 1,031 flights scheduled in it.
Across the year
American on LAX to MIA through the year
July is the worst month at 65.8% on time, 25 points below April, the best at 90.3%. 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 250 flights.
Across the week, Thursday is the strongest day at 81.4% on time and Saturday the weakest at 75.2%. 6 points is a smaller lever than departure hour, but it is free.
Delay causes
Why American runs late on this route
One category carries most of the weight here. Carrier accounts for 45% of the 42,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 45%Carrier
- 40%Late-arriving aircraft
- 14%National Airspace System
- 0%Security
40% 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 42,000 reported delay minutes here, that single category outweighs weather by 40 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 41,691 reported delay minutes.
The largest share of delay minutes, 45%, 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 19,000 of the 42,000 delay minutes reported here.
Cancellations are rare at 0.58%, 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
6.0% 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 74.3% on time across 2,751 flights, 5 points below 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 2,753 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 LAX to MIA
Put together: the calendar is the biggest lever here, not the carrier or the hour. April runs 90.3% on time and July 65.8%, a swing of 25 points. If the dates move at all, move them out of July before you think about anything else. 2,731 completed flights over 12 months sit behind that.
Related
Where to go next
- LAX to MIA, every carrier
- American on MIA to LAX, the return leg
- Delta Air Lines on LAX to MIA73.7%
- American Airlines network-wide record
- Los Angeles International (LAX) delay statistics
- Miami International (MIA) 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.