Route on-time record

RDU to MIA: most on-time flights and the best time to fly

Raleigh/Durham (Raleigh-Durham International Airport) to Miami (Miami International Airport). 2,373 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 1.8% were cancelled. The most reliable flight number was American 1231 at 6:06 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

RDU → MIA

Raleigh/Durham to Miami: 2,373 nonstop flights a year

On time (12 months)

76%

Cancelled

1.8%

avg delay 23 min

Best time to leave

Before 9 AM

86% on time vs 59% 3 to 6 PM

Most reliable airline

Delta

77% chance on time

Check RDU to MIA fares

Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

#1 · American 1231
6:06 AM → 8:28 AM2h 22m nonstop
Local times, typical schedule. Last flown 2026-04-06.
90%
chance on time
On time (history)
94%
Cancelled
3.8%
Avg arrival delay
8 min
- Arrived on time 94% of the time (148 flights, Jun 2025 to May 2026).
- Cancelled 3.8% of the time (6 of 156).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 3 to 6 PM: 59%).
- Departs outside RDU's trouble window (11 AM to 5 PM, when 57% of its 14 ground stops and delay programs started).
Moderate track record · 148 flights
Find American 1231 fares Opens this date on Aviasales
#2 · American 395
6:30 AM → 8:42 AM2h 12m nonstop
Local times, typical schedule. Last flown 2026-05-20.
88%
chance on time
On time (history)
90%
Cancelled
0.0%
Avg arrival delay
6 min
- Arrived on time 90% of the time (108 flights, Jun 2025 to May 2026).
- Never cancelled in 108 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 3 to 6 PM: 59%).
- Departs outside RDU's trouble window (11 AM to 5 PM, when 57% of its 14 ground stops and delay programs started).
Moderate track record · 108 flights
Find American 395 fares Opens this date on Aviasales
#3 · American 1088
8:40 AM → 11:02 AM2h 22m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
On time (history)
90%
Cancelled
2.6%
Avg arrival delay
13 min
- Arrived on time 90% of the time (226 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 3 to 6 PM: 59%).
- Departs outside RDU's trouble window (11 AM to 5 PM, when 57% of its 14 ground stops and delay programs started).
Strong track record · 226 flights
Find American 1088 fares Opens this date on Aviasales
#4 · American 3010
8:30 AM → 10:45 AM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
On time (history)
84%
Cancelled
0.7%
Avg arrival delay
25 min
- Arrived on time 84% of the time (151 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 3 to 6 PM: 59%).
- Departs outside RDU's trouble window (11 AM to 5 PM, when 57% of its 14 ground stops and delay programs started).
Moderate track record · 151 flights
Find American 3010 fares Opens this date on Aviasales
#5 · American 1889
9:03 AM → 11:20 AM2h 17m nonstop
Local times, typical schedule. Last flown 2026-05-20.
81%
chance on time
On time (history)
86%
Cancelled
0.0%
Avg arrival delay
18 min
- Arrived on time 86% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- Departs outside RDU's trouble window (11 AM to 5 PM, when 57% of its 14 ground stops and delay programs started).
- Short track record (44 flights), so its score leans on the airline's record at this hour.
Limited track record · 44 flights
Find American 1889 fares Opens this date on Aviasales
#6 · American 2405
11:10 AM → 1:21 PM2h 11m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
On time (history)
91%
Cancelled
0.0%
Avg arrival delay
2 min
- Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
- Departs inside RDU's trouble window: 57% of its 14 ground stops and delay programs started between 11 AM and 5 PM.
- Lands inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find American 2405 fares Opens this date on Aviasales
#7 · Delta 890
8:20 AM → 10:35 AM2h 11m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
On time (history)
79%
Cancelled
1.1%
Avg arrival delay
17 min
- Arrived on time 79% of the time (356 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 3 to 6 PM: 59%).
- Departs outside RDU's trouble window (11 AM to 5 PM, when 57% of its 14 ground stops and delay programs started).
Strong track record · 356 flights
Find Delta 890 fares Opens this date on Aviasales
#8 · American 2644
11:27 AM → 1:39 PM2h 12m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as American 2340; its record covers all of them.
73%
chance on time
On time (history)
74%
Cancelled
2.5%
Avg arrival delay
22 min
- Arrived on time 74% of the time (271 flights, Jun 2025 to May 2026).
- Departs inside RDU's trouble window: 57% of its 14 ground stops and delay programs started between 11 AM and 5 PM.
- Lands inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 271 flights
Find American 2644 fares Opens this date on Aviasales
#9 · American 1413
7:55 PM → 10:10 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-20.
70%
chance on time
On time (history)
75%
Cancelled
0.0%
Avg arrival delay
18 min
- Arrived on time 75% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- Departs outside RDU's trouble window (11 AM to 5 PM, when 57% of its 14 ground stops and delay programs started).
- 72% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 44 flights
Find American 1413 fares Opens this date on Aviasales
#10 · Frontier 3321
8:09 AM → 10:27 AM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
68%
chance on time
On time (history)
69%
Cancelled
2.5%
Avg arrival delay
28 min
- Arrived on time 69% of the time (156 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 3 to 6 PM: 59%).
- Departs outside RDU's trouble window (11 AM to 5 PM, when 57% of its 14 ground stops and delay programs started).
- 58% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 156 flights
Find Frontier 3321 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

Delta Air Lines77%
360 flights · 79% on time as flown · 1.3% cancel
American Airlines76%
1,731 flights · 77% on time as flown · 1.7% cancel
Envoy Air (sold as American Eagle)73%
77 flights · 73% on time as flown · 1.6% cancel
Republic Airways (sold as American Eagle, Delta Connection or United Express)69%
30 flights · 59% on time as flown · 2.0% cancel
Frontier Airlines68%
175 flights · 68% on time as flown · 3.0% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

Before 9 AM86%
1,052 flights · avg delay 14 min
9 AM to noon79%
416 flights · avg delay 20 min
Noon to 3 PM71%
140 flights · avg delay 20 min
3 to 6 PM59%
263 flights · avg delay 48 min
6 to 9 PM65%
485 flights · avg delay 30 min

Best day: Wednesday (81%). Worst: Sunday (75%).

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

What delays this route

Late-arriving aircraft46%
Airline (crew, maintenance, boarding)41%
Air traffic control and airport volume12%
Severe weather1%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

RDU to MIA questions

What time of day is best to fly RDU to MIA?: Before 9 AM: 86% of flights arrived on time, against 59% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from RDU to MIA?: Delta, with a season-adjusted 77% chance of operating and arriving on time over 360 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on RDU to MIA?: August (70% on time); the best was April (84%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?: No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

More routes from RDU

Live status: FAA delays and ground stops

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