Delta Air Lines RDU to MIA on-time performance
Delta Air Lines nonstop flights from Raleigh/Durham to Miami · Aug 2025 – Jul 2026
On-time arrivals
82%
arrived < 15 min late
Cancelled
1.9%
7 flights
Avg arrival delay
17 min
92 min when late
Rank on route
#1 of 5
route average 77% on time
Key facts
- Delta Air Lines flights on RDU to MIA arrived on time 82% of the time in Aug 2025 – Jul 2026.
- 1.9% were cancelled, and 10% arrived an hour or more late.
- That ranks #1 of 5 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (80%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)80%
- Air traffic control & airport congestion17%
- Extreme weather2%
- Late-arriving aircraft1%
- Security0%
Other airlines on RDU to MIA
- American Airlines77% on time · 24 min avg delay
- Frontier Airlines68% on time · 27 min avg delay
- Envoy Air73% on time · 20 min avg delay
- Republic Airways59% on time · 21 min avg delay
Full RDU to MIA comparison →
Delta Air Lines on-time record across all routes →
360 Delta Air Lines flights tracked on this route; 7 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.