Carrier route record
AAMIA→RDU
American Airlines · Miami to Raleigh
- Flights
- 1,700
- Period
- July 2025 to June 2026
- Share of route
- 72%
- Carriers
- 5
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with American Airlines.
American on MIA to RDU sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 1,700 flights, with a median arrival 3 minutes early.
The national on-time rate over the same period is 77.6%, so American on MIA to RDU runs 6 points behind the country as a whole. Across a thousand flights that is about 62 extra late arrivals.
Key figures
On time
71.4%
Arrivals under 15 minutes late, of 1,674 completed flights
Avg delay
72 min
Across delayed arrivals only, not all flights
Cancelled
1.47%
National rate is 1.81%
Whole route
71.4%
Every carrier on MIA to RDU, 2,347 flights
These figures cover 1,700 flights between July 2025 and June 2026. Beyond the headline rate, 12.2% 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 RDU
American flew 1,700 of the 2,347 flights on MIA to RDU, most of the route. Its 71.4% on time is about level with the route as a whole at 71.4%. Ranked by on-time rate it is number three of five carriers on the route, where the range runs from Envoy at 88.7% to Republic at 64.3%. 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 | 72 | 88.7% | 42 min | 1.39% | A |
| Frontier Airlinesthin sample | 185 | 78.6% | 70 min | 1.62% | B |
| American Airlines (this page) | 1,700 | 71.4% | 72 min | 1.47% | C |
| Delta Air Linesthin sample | 360 | 64.7% | 95 min | 2.50% | D |
| Republic Airwaysthin sample | 30 | 64.3% | 80 min | 6.67% | D− |
Flight by flight
American flight numbers on MIA to RDU
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 29 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–8am31 flights93.3%
- 8am–11am343 flights86.6%
- 11am–2pm1 flights—
- 2pm–5pm549 flights64.5%
- 5pm–8pm331 flights72.9%
- 8pm–5am445 flights65.8%
Scale runs 55% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 93.3% of the time, against 64.5% for the afternoon window. That is 29 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 2pm–5pm window is the busiest, with 549 flights scheduled in it.
Across the year
American on MIA to RDU through the year
August is the worst month at 61.6% on time, 18 points below October, the best at 79.9%. 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. July was the busiest month here, with 177 flights.
Across the week, Tuesday is the strongest day at 79.1% on time and Friday the weakest at 64.1%. 15 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. Late-arriving aircraft accounts for 45% of the 34,000 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%Late-arriving aircraft
- 38%Carrier
- 10%National Airspace System
- 7%Extreme weather
45% 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 34,000 reported delay minutes here, that single category outweighs weather by 7 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 34,364 reported delay minutes.
The largest share of delay minutes, 38%, 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 13,000 of the 34,000 delay minutes reported here.
Cancellations sit at 1.47% against a national 1.81%, which is ordinary. Diversions add another 0.06%.
Connections and stage length
What a delay here costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 12.2% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg is a different operation and performs like one: it runs 77.2% on time across 1,705 flights, 6 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 6 points of difference.
The sample behind these figures is 1,700 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 RDU
Put together: the calendar is the biggest lever here, not the carrier or the hour. October runs 79.9% on time and August 61.6%, a swing of 18 points. If the dates move at all, move them out of August before you think about anything else. 1,674 completed flights over 12 months sit behind that.
Related
Where to go next
- MIA to RDU, every carrier
- American on RDU to MIA, the return leg
- Frontier Airlines on MIA to RDU78.6%
- Delta Air Lines on MIA to RDU64.7%
- American Airlines network-wide record
- Miami International (MIA) delay statistics
- Raleigh-Durham International (RDU) 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.