Route Reliability
Philadelphia → San Juan
PHL–SJU · 1,576 miles · Philadelphia International Airport to Luis Muñoz Marín International Airport
- 63%
- Arrive within 15 minutes
- 24 min
- Average arrival delay
- 3.3%
- Cancelled
- 1,831
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.American Airlines68%675 flights
- 2.Spirit Airlines65%245 flights
- 3.Frontier Airlines57%844 flights
Not enough history to rank: JetBlue Airways (67 flights). We rank airlines only after 100 flights on the route.
What the data says
The late departure is the smart one here.
PHL–SJU flights departing between 9 PM–12 AM arrived on time 90% of the time, versus 43% between 3–6 PM.
Sunday scaries are real for this one.
PHL–SJU flights arrived on time 70% of the time on Tuesdays. On Sundays: 56%.
American Airlines runs this route best.
American Airlines arrived on time 68% of the time on this route; Frontier Airlines managed 57%.
Keep a backup plan handy.
This route was cancelled 3.3% of the time. Typical for U.S. flights is around 1–2%.
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
- Mon58%(260 flights)
- Tue70%(214 flights)
- Wed69%(223 flights)
- Thu63%(268 flights)
- Fri65%(276 flights)
- Sat61%(256 flights)
- Sun56%(267 flights)
- 6–9 AM71%(478 flights)
- 9 AM–12 PM74%(284 flights)
- 12–3 PM69%(154 flights)
- 3–6 PM43%(112 flights)
- 6–9 PM54%(705 flights)
- 9 PM–12 AM90%(31 flights)
Jun 62% → May 78% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 62% | 130 |
| July 2025 | 44% | 126 |
| August 2025 | 53% | 122 |
| September 2025 | 60% | 63 |
| October 2025 | 62% | 95 |
| November 2025 | 72% | 124 |
| December 2025 | 55% | 158 |
| January 2026 | 59% | 172 |
| February 2026 | 61% | 165 |
| March 2026 | 60% | 196 |
| April 2026 | 75% | 217 |
| May 2026 | 78% | 196 |
Keep nerding
Based on 1,831 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.