SJU to RDU flight delays & on-time performance
Nonstop flights from Luis Munoz Marin International Airport to Raleigh-Durham International Airport · 1,432 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SJU or RDU right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from San Juan (SJU) to Raleigh/Durham (RDU) arrived on time 82% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.7% were cancelled, and 8% arrived an hour or more late.
- JetBlue was the most punctual airline here (84% on time); Frontier Airlines was the least (77%).
- Departures scheduled around 8am did best (94% on time); around 4pm did worst (67%).
- Wednesday was the most reliable day to fly (93% on time) and Saturday the least (74%).
- The largest source of delay minutes was late-arriving aircraft (56%).
Which airline is most on time from SJU to RDU?
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 | 88% | 5.9% | 16 min | 6.3% | 17 |
| JetBlue | 84% | 1.5% | 13 min | 6.4% | 333 |
| Frontier Airlines | 77% | 1.7% | 18 min | 11.4% | 117 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am92%76 flights
- 7am81%28 flights
- 8am94%81 flights
- 9am88%16 flights
- 10am78%63 flights
- 11am78%36 flights
- 2pm88%17 flights
- 3pm74%75 flights
- 4pm67%44 flights
- 6pm81%21 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday77%0.0% cancelled
- Tuesday87%0.0% cancelled
- Wednesday93%0.0% cancelled
- Thursday81%0.0% cancelled
- Friday89%0.0% cancelled
- Saturday74%6.7% cancelled
- Sunday81%3.9% 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 aircraft56%
- Airline (crew, maintenance, cleaning, fueling)30%
- Air traffic control & airport congestion12%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather38%
- Airline (crew, maintenance, cleaning, fueling)25%
- Air traffic control & airport congestion25%
- Security13%
SJU to RDU: common questions
- How often are SJU to RDU flights on time?
- 82% 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 San Juan to Raleigh/Durham cancelled?
- 1.7% of scheduled flights were cancelled (8 of 467).
- How long are typical delays?
- Across all flights the average arrival delay was 15 min (early arrivals count as zero). Flights that were late arrived 78 min behind schedule on average, and 7.7% of flights were an hour or more late.
- How long is taxi time at SJU?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: RDU to SJU — 71% on time
More flights from San Juan
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SJU → RDU, nonstop flights by US airlines that report to the DOT. How we calculate this.