Best Time to Fly SJU to RDU: On-Time Stats by Hour & Airline
Luis Munoz Marin International → Raleigh-Durham International
Data through July 2026 · Last updated October 18, 2026
467 flights were scheduled from San Juan (SJU) to Raleigh/Durham (RDU) in the last 12 months, and 82.5% of those that flew arrived on time, 4.9 points above the US average of 77.6%.
JetBlue was the most punctual of the 2 airlines on the route at 84.1%, while Frontier Airlines trailed at 77.2%.
February has been the best month (89% on time) and Monday the weakest day of the week (71%).
1.7% of flights were cancelled, versus 1.8% nationally.
SJU to RDU on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| JetBlue | 84.1% | 78 min | 1.5% | 333 |
| Frontier Airlines | 77.2% | 75 min | 1.7% | 117 |
| Delta Air Lines | Limited data | 17 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SJU to RDU
On-time arrival % by scheduled departure hour (local time), 955 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 92.0% | 1.3% | 76 |
| 7am–8am | 83.8% | 5.1% | 39 |
| 8am–9am | 89.6% | 1.3% | 158 |
| 9am–10am | 81.2% | 0.0% | 48 |
| 10am–11am | 81.4% | 0.0% | 183 |
| 11am–12pm | 77.0% | 1.6% | 62 |
| 12pm–1pm | 71.4% | 0.0% | 35 |
| 1pm–2pm | 73.5% | 0.0% | 49 |
| 2pm–3pm | Limited data | 17 | |
| 3pm–4pm | 73.6% | 1.3% | 75 |
| 4pm–5pm | 64.9% | 4.3% | 116 |
| 5pm–6pm | Limited data | 24 | |
| 6pm–7pm | Limited data | 22 | |
| 7pm–8pm | 87.1% | 0.0% | 31 |
| 9pm–10pm | Limited data | 20 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SJU to RDU
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 28 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 63.8% | -18.1 pts | 4.2% | 72 |
| Summer peak (Jun 15 - Aug 15) | 78.4% | -3.5 pts | 1.6% | 191 |
| All other days | 81.9% | — | 0.9% | 664 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).