Delta Air Lines RDU to SJU on-time performance
Delta Air Lines nonstop flights from Raleigh/Durham to San Juan · Aug 2025 – Jul 2026
On-time arrivals
56%
arrived < 15 min late
Cancelled
5.9%
1 flights
Avg arrival delay
21 min
47 min when late
Rank on route
#3 of 3
route average 71% on time
Key facts
- Delta Air Lines flights on RDU to SJU arrived on time 56% of the time in Aug 2025 – Jul 2026.
- 5.9% were cancelled, and 6% arrived an hour or more late.
- That ranks #3 of 3 airlines on this route, which averaged 71% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (94%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion94%
- Airline (crew, maintenance, cleaning, fueling)6%
- Late-arriving aircraft0%
- Extreme weather0%
- Security0%
Other airlines on RDU to SJU
- JetBlue76% on time · 23 min avg delay
- Frontier Airlines59% on time · 58 min avg delay
Full RDU to SJU comparison →
Delta Air Lines on-time record across all routes →
17 Delta Air Lines flights tracked on this route; 1 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.