Miami (MIA) to Raleigh/Durham (RDU): On-Time Performance
Data through July 2026
Miami (MIA) to Raleigh/Durham (RDU) effectively runs on two schedules. In February 2025, 84% of arrivals were on time; in August 2024 that fell to 52% — a 32-point seasonal swing. Across the full period the route averages 72% on-time against a national 78%. Morning departures also hold up better than evening ones (88% vs 68%), which matters most in the rough months.
- On-time
- 72%
- arrived <15 min late
- Avg delay
- 23 min
- completed flights
- Cancelled
- 1.6%
- Flights/day
- 6.5
- last 12 months
- Duration
- 2h 15m
- scheduled
- Distance
- 700 mi
Best airline from MIA to RDU
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Airmost reliable | 85% | 9 min | 1.1% | 263 |
| Frontier Airlines | 74% | 22 min | 2.0% | 392 |
| American Airlines | 71% | 22 min | 1.4% | 3,662 |
| Delta Air Lines | 69% | 31 min | 2.0% | 755 |
Monthly on-time trend
Best time to fly from MIA to RDU
Aim for departures around 7 a.m. (94% on-time); avoid 4 p.m. departures (62%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 73% | 25 min |
| Tuesdaybest | 78% | 20 min |
| Wednesday | 76% | 18 min |
| Thursday | 75% | 18 min |
| Friday | 66% | 27 min |
| Saturday | 72% | 23 min |
| Sunday | 65% | 28 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft49%
- Airline operations32%
- National airspace system12%
- Weather7%
Frequently asked questions
- How often are flights from MIA to RDU delayed?
- 28% of MIA–RDU flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 23 minutes.
- Which airline is most reliable from MIA to RDU?
- Envoy Air has the best on-time record on this route at 85%, based on 263 flights. 4 airlines flew MIA–RDU frequently enough to compare in this period.
- What is the best time of day to fly from MIA to RDU?
- Departures around 7 a.m. have the best record (94% on-time), while departures around 4 p.m. have the worst (62%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MIA to RDU?
- The scheduled MIA–RDU flight time averages 2h 15m over 700 miles. Actual arrival times vary — flights on this route land 15+ minutes late 28% of the time.
- How often are MIA to RDU flights cancelled?
- 1.6% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from MIA to RDU?
- August 2024 was the roughest month in this dataset, with only 52% of arrivals on time. The best was February 2025 at 84%. If your dates are flexible, that 32-point gap is worth planning around.
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Based on 5,155 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.