Carrier route record
AAMSY→MIA
American Airlines · New Orleans to Miami
- Flights
- 1,293
- Period
- September 2025 to August 2026
- Share of route
- 87%
- Carriers
- 5
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with American Airlines.
American on MSY to MIA lands a B, 3 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 1,293 flights, with a median arrival 9 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate American on MSY 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
80.6%
Arrivals under 15 minutes late, of 1,277 completed flights
Avg delay
84 min
Across delayed arrivals only, not all flights
Cancelled
1.24%
National rate is 1.89%
Whole route
80.2%
Every carrier on MSY to MIA, 1,478 flights
These figures cover 1,293 flights between September 2025 and August 2026. The median arrival is 9 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.
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Carrier by carrier
American against every carrier on MSY to MIA
American flew 1,293 of the 1,478 flights on MSY to MIA, most of the route. Its 80.6% on time is about level with the route as a whole at 80.2%. Ranked by on-time rate it is number two of five carriers on the route, where the range runs from Envoy at 82.7% to Republic at 66.7%. Four of those carriers flew fewer than 365 flights here, so treat their positions as rough.
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 |
|---|---|---|---|---|---|
| Envoy Airthin sample | 105 | 82.7% | 50 min | 0.00% | B+ |
| American Airlines (this page) | 1,293 | 80.6% | 84 min | 1.24% | B |
| Frontier Airlinesthin sample | 4 | 75.0% | 15 min | 0.00% | B+ |
| Spirit Airlinesthin sample | 67 | 71.9% | 80 min | 4.48% | C− |
| Republic Airwaysthin sample | 9 | 66.7% | 101 min | 0.00% | C+ |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
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 21 points, against half a point between the best and worst carrier.
- 5am–8am531 flights87.0%
- 8am–11am356 flights83.5%
- 11am–2pm99 flights79.6%
- 2pm–5pm—
- 5pm–8pm307 flights66.2%
- 8pm–5am—
Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 87.0% of the time, against 66.2% for the evening window. That is 21 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 531 flights scheduled in it.
Across the year
American on MSY to MIA through the year
December is the weak month at 72.7% on time, against 88.8% in November. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. January was the busiest month here, with 133 flights.
Across the week, Tuesday is the strongest day at 89.1% on time and Sunday the weakest at 68.8%, a spread of 20 points.
Arrival by arrival
How late American on MSY to MIA runs when it is late
American on MSY to MIA often beats the schedule: 423 of 1,277 completed flights, 33%, arrived 15 minutes or more early. The 248 late arrivals split 71 under half an hour, 86 between 30 and 60 minutes, and 91 an hour or more.
- 15+ min early423 flights33.1%
- Within 15 min606 flights47.5%
- 15–29 min late71 flights5.6%
- 30–59 min late86 flights6.7%
- 1–2 hours late52 flights4.1%
- 2+ hours late39 flights3.1%
Scale runs 0% to 100%.
Share of 1,277 completed flights by arrival against schedule.
54 of 260 late departures made up the time and arrived on time, 21% of them. 42 flights left on time and still arrived late.
The worst days
Worst days for American on MSY to MIA
The latest arrival of the period was on 15 November 2025, 30 hours 2 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 November 2025 | 30 hours 2 minutes | Carrier |
| 19 December 2025 | 24 hours 42 minutes | Carrier |
| 19 June 2026 | 16 hours 25 minutes | Carrier |
| 31 August 2026 | 6 hours 41 minutes | Late-arriving aircraft |
| 23 March 2026 | 4 hours 48 minutes | Carrier |
Delay causes
Why American runs late on this route
Carrier accounts for 49% of the 21,000 delay minutes carriers reported here, and the remaining four split what is left.
- 49%Carrier
- 39%Late-arriving aircraft
- 10%National Airspace System
- 3%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. Across 21,000 reported delay minutes here, that single category outweighs weather by 15 to one. The split is drawn from 20,801 reported delay minutes.
The largest share of delay minutes, 49%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 10,000 of the 21,000 delay minutes reported here.
Cancellations sit at 1.24% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here costs
7.1% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.
The 674 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg is a different operation and performs like one: it runs 74.1% on time across 1,295 flights, 7 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 7 points of difference.
The sample behind these figures is 1,293 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 MSY to MIA
Put together: the calendar is the biggest lever here, not the carrier or the hour. November runs 88.8% on time and December 72.7%, a swing of 16 points. If the dates move at all, move them out of December before you think about anything else. 1,277 completed flights over 12 months sit behind that.
Related
Where to go next
- MSY to MIA, every carrier
- American on MIA to MSY, the return leg
- Envoy Air on MSY to MIA82.7%
- American Airlines network-wide record
- Louis Armstrong New Orleans International (MSY) 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 7.05 million flight records
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.