RDU to MIA flight delays & on-time performance
Nonstop flights from Raleigh-Durham International Airport to Miami International Airport · 700 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at RDU or MIA right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Raleigh/Durham (RDU) to Miami (MIA) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.7% were cancelled, and 11% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (82% on time); Frontier Airlines was the least (68%).
- Departures scheduled around 5am did best (94% on time); around 5pm did worst (59%).
- Thursday was the most reliable day to fly (84% on time) and Friday the least (71%).
- The largest source of delay minutes was late-arriving aircraft (49%).
Which airline is most on time from RDU to MIA?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Delta Air Lines | 82% | 1.9% | 17 min | 9.9% | 360 |
| American Airlines | 77% | 1.5% | 24 min | 10.4% | 1,676 |
| Envoy AirRegional airline operating American Eagle flights. | 73% | 1.1% | 20 min | 9.7% | 94 |
| Frontier Airlines | 68% | 3.5% | 27 min | 13.5% | 199 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 59% | 3.3% | 21 min | 10.3% | 30 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am94%107 flights
- 6am93%264 flights
- 7am87%101 flights
- 8am84%615 flights
- 9am86%63 flights
- 11am81%288 flights
- 12pm73%103 flights
- 3pm59%30 flights
- 5pm59%199 flights
- 6pm64%214 flights
- 7pm62%298 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday77%3.3% cancelled
- Tuesday81%1.7% cancelled
- Wednesday82%1.0% cancelled
- Thursday84%0.6% cancelled
- Friday71%0.3% cancelled
- Saturday73%0.9% cancelled
- Sunday71%4.2% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft49%
- Airline (crew, maintenance, cleaning, fueling)39%
- Air traffic control & airport congestion11%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather73%
- Airline (crew, maintenance, cleaning, fueling)24%
- Air traffic control & airport congestion2%
- Security0%
RDU to MIA: common questions
- How often are RDU to MIA flights on time?
- 77% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Raleigh/Durham to Miami cancelled?
- 1.7% of scheduled flights were cancelled (41 of 2,359).
- How long are typical delays?
- Across all flights the average arrival delay was 23 min (early arrivals count as zero). Flights that were late arrived 96 min behind schedule on average, and 10.6% of flights were an hour or more late.
- How long is taxi time at RDU?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MIA to RDU — 71% on time
More flights from Raleigh/Durham
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: RDU → MIA, nonstop flights by US airlines that report to the DOT. How we calculate this.