Carrier route record
AARDU→MIA
American Airlines · Raleigh to Miami
- Flights
- 1,666
- Period
- September 2025 to August 2026
- Share of route
- 70%
- Carriers
- 5
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with American Airlines.
American on RDU to MIA lands a B, about a point 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 close to two hours on average. That rests on 1,666 flights, with a median arrival 8 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate American on RDU 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
78.4%
Arrivals under 15 minutes late, of 1,637 completed flights
Avg delay
104 min
Across delayed arrivals only, not all flights
Cancelled
1.56%
National rate is 1.89%
Whole route
77.8%
Every carrier on RDU to MIA, 2,367 flights
These figures cover 1,666 flights between September 2025 and August 2026. Beyond the headline rate, 10.0% 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 RDU to MIA
American flew 1,666 of the 2,367 flights on RDU to MIA, most of the route. Its 78.4% on time is about level with the route as a whole at 77.8%. Ranked by on-time rate it is number two of five carriers on the route, where the range runs from Delta at 84.2% to Republic at 58.6%. 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 |
|---|---|---|---|---|---|
| Delta Air Linesthin sample | 360 | 84.2% | 82 min | 1.67% | B |
| American Airlines (this page) | 1,666 | 78.4% | 104 min | 1.56% | B |
| Envoy Airthin sample | 102 | 74.3% | 69 min | 0.98% | C+ |
| Frontier Airlinesthin sample | 209 | 66.8% | 78 min | 3.35% | C− |
| Republic Airwaysthin sample | 30 | 58.6% | 49 min | 3.33% | D− |
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 34 points, against half a point between the best and worst carrier.
- 5am–8am458 flights92.8%
- 8am–11am268 flights86.1%
- 11am–2pm352 flights81.7%
- 2pm–5pm—
- 5pm–8pm463 flights58.8%
- 8pm–5am125 flights73.0%
Scale runs 50% to 100%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 58.8% on time, against 92.8% 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 5pm–8pm window is the busiest, with 463 flights scheduled in it.
Across the year
American on RDU to MIA through the year
July is the worst month at 70.7% on time, 14 points below April, the best at 84.6%. 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 151 flights.
Across the week, Thursday is the strongest day at 84.3% on time and Sunday the weakest at 72.2%, a spread of 12 points.
Arrival by arrival
How late American on RDU to MIA runs when it is late
American on RDU to MIA often beats the schedule: 527 of 1,637 completed flights, 32%, arrived 15 minutes or more early. The 354 late arrivals split 89 under half an hour, 101 between 30 and 60 minutes, and 164 an hour or more.
- 15+ min early527 flights32.2%
- Within 15 min756 flights46.2%
- 15–29 min late89 flights5.4%
- 30–59 min late101 flights6.2%
- 1–2 hours late90 flights5.5%
- 2+ hours late74 flights4.5%
Scale runs 0% to 100%.
Share of 1,637 completed flights by arrival against schedule.
71 of 378 late departures made up the time and arrived on time, 19% of them. 47 flights left on time and still arrived late.
The worst days
Worst days for American on RDU to MIA
The latest arrival of the period was on 2 December 2025, 26 hours 46 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 2 December 2025 | 26 hours 46 minutes | Carrier |
| 5 July 2026 | 16 hours 10 minutes | Carrier |
| 9 November 2025 | 16 hours 3 minutes | Carrier |
| 1 August 2026 | 15 hours 47 minutes | Late-arriving aircraft |
| 6 July 2026 | 14 hours 37 minutes | Late-arriving aircraft |
Delay causes
Why American runs late on this route
Late-arriving aircraft accounts for 54% of the 37,000 delay minutes carriers reported here, and the remaining four split what is left.
- 54%Late-arriving aircraft
- 36%Carrier
- 8%National Airspace System
- 2%Extreme weather
- 0%Security
54% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 37,000 reported delay minutes here, that single category outweighs weather by 31 to one. The split is drawn from 36,653 reported delay minutes.
The largest share of delay minutes, 36%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 13,000 of the 37,000 delay minutes reported here.
Cancellations sit at 1.56% against a national 1.89%, which is ordinary. Diversions add another 0.18%.
Connections and stage length
What a delay here costs
10.0% 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.
The 700 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 72.1% on time across 1,662 flights, 6 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 6 points of difference.
The sample behind these figures is 1,666 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 RDU to MIA
Put together: the calendar is the biggest lever here, not the carrier or the hour. April runs 84.6% on time and July 70.7%, a swing of 14 points. If the dates move at all, move them out of July before you think about anything else. 1,637 completed flights over 12 months sit behind that.
Related
Where to go next
- RDU to MIA, every carrier
- American on MIA to RDU, the return leg
- Delta Air Lines on RDU to MIA84.2%
- Envoy Air on RDU to MIA74.3%
- Frontier Airlines on RDU to MIA66.8%
- American Airlines network-wide record
- Raleigh-Durham International (RDU) 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.