RDU to MIA flight delays
RDU MIA Raleigh-Durham to Miami · 700 miles
7,224 flights were scheduled from RDU to MIA over July 2023 through June 2026. Of the 7,094 that made the trip, 78.3% reached the gate less than 15 minutes behind schedule. These are arrival figures: “on time” means the flight reached the gate less than 15 minutes behind schedule. Arrivals are what decide whether you make the connection, so route and airline pages are scored on them rather than on pushback.
Data through June 2026 · Bureau of Transportation Statistics
The route in brief
- Flights in the window
- 7,224
- Arrived on time
- 78.3%
- Cancelled
- 1.6%
- Scheduled distance
- 700 miles
Cancellations are counted against everything scheduled. Diverted flights are counted with them rather than as very late arrivals, which is why the on-time share and the cancellation rate do not add up to everything that happened.
Airline by airline
Airlines with at least 100 flights on RDU–MIA, busiest first. Same route, same weather, same air traffic — which makes this the fairest comparison on the site.
| Airline | Arrived on time | Typical delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlines | 77.9% | 87 min | 1.5% | 4,921 |
| Delta Air Lines | 84.6% | 74 min | 1.4% | 1,089 |
| Envoy Air | 77.7% | 53 min | 0.7% | 611 |
| Frontier Airlines | 70.2% | 90 min | 3.8% | 447 |
Month by month
August was the month to avoid on RDU–MIA: 69.5% of flights arrived on time, against 84.3% in April. Each bar pools three years of that calendar month.
| Month | Share flights that arrived on time | Flights |
|---|---|---|
| January | 76.2% | 620 |
| February | 81.3% | 566 |
| March | 79.9% | 649 |
| April | 84.3% | 682 |
| May | 78.5% | 625 |
| June | 74.9% | 618 |
| July | 71.8% | 627 |
| August | 69.5% | 585 |
| September | 82% | 547 |
| October | 82.2% | 568 |
| November | 81.7% | 547 |
| December | 77.7% | 590 |
Both ends of the route
A route’s record is built out of two airports’ habits. The hour-by-hour grid for each is on its own page.
RDU to MIA in one number
RDU → MIA
When a flight on this route was late, it was late by about 82 min.
Questions about RDU to MIA
- Which airline is most reliable from RDU to MIA?
- Delta Air Lines — its flights on this pairing arrived on time 84.6% of the time, with 1,089 scheduled. Frontier Airlines came in at 70.2% over 447 scheduled. Airlines with fewer than 100 flights on the route are not rated.
- What is the worst month to fly RDU to MIA?
- August, at 69.5% of arrivals on time, with 585 flights scheduled. April was the best of the year at 84.3%.
- How late are RDU–MIA flights when they are late?
- 82 min on average, counting only the flights that arrived 15 minutes or more behind schedule. The on-time flights are left out of that average on purpose — mixing them in would flatter it.
- How often is the RDU to MIA flight cancelled?
- 1.6% of scheduled flights on this route were cancelled, July 2023 through June 2026. Diverted flights are counted with the cancellations rather than as late arrivals.
- Are these departure or arrival numbers?
- Arrival. A flight counts as on time here if it reached the gate at MIA less than 15 minutes behind schedule. Airport pages score departures instead, because that is the number you can act on when you pick a booking time.