Carrier route record
AALAX→ATL
American Airlines · Los Angeles to Atlanta
- Flights
- 376
- Period
- September 2025 to August 2026
- Share of route
- 8%
- Carriers
- 4
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with American Airlines.
American on LAX to ATL draws a C+. About one flight in three arrives at least 15 minutes late, and the typical late arrival is an hour and a half behind schedule. Build slack into anything you connect to. That rests on 376 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 3,811 at 80.8% on time.
The national on-time rate over the same period is 77.3%, so American on LAX to ATL runs 11 points behind the country as a whole. Across a thousand flights that is about 108 extra late arrivals.
Key figures
On time
66.5%
Arrivals under 15 minutes late, of 373 completed flights
Avg delay
84 min
Across delayed arrivals only, not all flights
Cancelled
0.53%
National rate is 1.89%
Whole route
78.6%
Every carrier on LAX to ATL, 4,843 flights
These figures cover 376 flights between September 2025 and August 2026. Beyond the headline rate, 14.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
American against every carrier on LAX to ATL
American flew 376 of the 4,843 flights on LAX to ATL, about 8% of it. Its 66.5% on time is 12 points worse than the route as a whole, which runs 78.6%. Ranked by on-time rate it is last of four carriers on the route, where the range runs from Spirit at 85.5% to American at 66.5%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 80.8% of the time; Frontier Airlines manages 68.2%. Sample sizes sit next to every figure, because a two-point gap across 489 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Spirit Airlinesthin sample | 167 | 85.5% | 68 min | 0.60% | A+ |
| Delta Air Lines | 3,811 | 80.8% | 66 min | 0.84% | B+ |
| Frontier Airlines | 489 | 68.2% | 65 min | 1.64% | C |
| American Airlines (this page) | 376 | 66.5% | 84 min | 0.53% | C+ |
The spread between Delta and Frontier is 13 points, wide enough that it should decide the booking. On a hundred trips that is 13 more arrivals inside the on-time window.
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Departure window
When American runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 376 flights.
There are not enough flights in each departure window to split American's LAX to ATL record by time of day without the percentages moving on noise. The headline rate of 66.5% is the reliable figure here.
Across the year
American on LAX to ATL through the year
Delays peak in May, when the on-time rate falls to 48.4%. March is the strongest month at 83.3%. Moving a flexible trip across that boundary buys 35 points. November was the busiest month here, with 40 flights.
Across the week, Thursday is the strongest day at 77.4% on time and Sunday the weakest at 56.4%, a spread of 21 points.
Arrival by arrival
How late American on LAX to ATL runs when it is late
The 125 late arrivals split 35 under half an hour, 36 between 30 and 60 minutes, and 54 an hour or more.
- 15+ min early66 flights17.7%
- Within 15 min182 flights48.8%
- 15–29 min late35 flights9.4%
- 30–59 min late36 flights9.7%
- 1–2 hours late29 flights7.8%
- 2+ hours late25 flights6.7%
Scale runs 0% to 100%.
Share of 373 completed flights by arrival against schedule.
19 of 129 late departures made up the time and arrived on time, 15% of them. 15 flights left on time and still arrived late.
The worst days
Worst days for American on LAX to ATL
The latest arrival of the period was on 10 October 2025, 8 hours 52 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 10 October 2025 | 8 hours 52 minutes | Late-arriving aircraft |
| 28 February 2026 | 6 hours 31 minutes | Carrier |
| 17 November 2025 | 6 hours 15 minutes | Late-arriving aircraft |
| 12 January 2026 | 5 hours 30 minutes | Carrier |
| 12 October 2025 | 5 hours 13 minutes | Carrier |
Delay causes
Why American runs late on this route
Late-arriving aircraft accounts for 52% of the 10,000 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Late-arriving aircraft
- 35%Carrier
- 13%National Airspace System
52% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 10,000 reported delay minutes here, that single category outweighs weather by 52 to one. The split is drawn from 10,478 reported delay minutes.
The largest share of delay minutes, 35%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,693 of the 10,000 delay minutes reported here.
Cancellations are rare at 0.53%, below the national 1.89% 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
14.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
At 1,947 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 73.0% on time across 377 flights, 7 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 7 points of difference.
One caution: this is a thin sample. 376 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking American on LAX to ATL
Put together: treat all of this as provisional. 376 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 66.5% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 373 completed flights over 12 months sit behind that.
Related
Where to go next
- LAX to ATL, every carrier
- American on ATL to LAX, the return leg
- Spirit Airlines on LAX to ATL85.5%
- Delta Air Lines on LAX to ATL80.8%
- Frontier Airlines on LAX to ATL68.2%
- American Airlines network-wide record
- Los Angeles International (LAX) delay statistics
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Why the first flight of the morning is statistically safest
- Same route, different airline: where the carrier you pick matters most
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.