Route Reliability
San Juan → Raleigh–Durham
SJU–RDU · 1,432 miles · Luis Muñoz Marín International Airport to Raleigh–Durham International Airport
- 84%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 1.9%
- Cancelled
- 469
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.JetBlue Airways87%329 flights
- 2.Frontier Airlines74%123 flights
Not enough history to rank: Delta Air Lines (17 flights). We rank airlines only after 100 flights on the route.
What the data says
The 12–3 PM departure wins.
SJU–RDU flights departing between 12–3 PM arrived on time 100% of the time, versus 67% between 3–6 PM.
Mondays have been rough.
SJU–RDU flights arrived on time 94% of the time on Wednesdays and just 75% on Mondays. That gap is worth planning around.
JetBlue Airways runs this route best.
JetBlue Airways arrived on time 87% of the time on this route; Frontier Airlines managed 74%.
Slipping a little lately.
SJU–RDU flights arrived on time 87% of the time over the last three months in the data, compared with 90% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon75%(79 flights)
- Tue88%(43 flights)
- Wed94%(47 flights)
- Thu83%(66 flights)
- Fri91%(80 flights)
- Sat76%(78 flights)
- Sun84%(67 flights)
- 6–9 AM92%(169 flights)
- 9 AM–12 PM81%(180 flights)
- 12–3 PM100%(18 flights)
- 3–6 PM67%(82 flights)
- 6–9 PM91%(11 flights)
Jun 75% → May 95% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 75% | 40 |
| July 2025 | 83% | 48 |
| August 2025 | 68% | 41 |
| September 2025 | 72% | 18 |
| October 2025 | 94% | 18 |
| November 2025 | 80% | 40 |
| December 2025 | 88% | 51 |
| January 2026 | 92% | 39 |
| February 2026 | 89% | 37 |
| March 2026 | 78% | 49 |
| April 2026 | 88% | 40 |
| May 2026 | 95% | 39 |
Keep nerding
Based on 469 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.