Flight Reliability
F9 4462 · Frontier Airlines
Philadelphia → San Juan (PHL–SJU)
29
Bring Snacks
WanderNerd Reliability Score
- 51%
- Arrive within 15 minutes
- 32 min
- Average arrival delay
- 4.5%
- Cancelled
- 14 min
- Median arrival delay
Based on 314 historical flights. Data through May 2026.
What the data says
Mondays have been rough.
F9 4462 arrived on time 67% of the time on Wednesdays and just 38% on Mondays. That gap is worth planning around.
Lagging the PHL–SJU route.
F9 4462 arrived on time 51% of the time, versus 63% across the PHL–SJU route.
Well behind the Frontier Airlines network.
F9 4462 arrived on time 51% of the time, versus 73% across the Frontier Airlines network.
Keep a backup plan handy.
F9 4462 was cancelled 4.5% of the time. Typical for U.S. flights is around 1–2%.
The breakdown
- Mon38%(37 flights)
- Tue63%(35 flights)
- Wed67%(45 flights)
- Thu54%(46 flights)
- Fri53%(45 flights)
- Sat42%(45 flights)
- Sun39%(46 flights)
50%
May
Jun 43% → May 50% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 43% | 30 |
| July 2025 | 35% | 26 |
| August 2025 | 39% | 26 |
| September 2025 | 45% | 20 |
| October 2025 | 67% | 30 |
| November 2025 | 57% | 23 |
| December 2025 | 41% | 29 |
| January 2026 | 69% | 16 |
| February 2026 | 56% | 18 |
| March 2026 | 54% | 26 |
| April 2026 | 62% | 29 |
| May 2026 | 50% | 26 |
- Departures on time
- 63%
- Diverted
- 0.3%
- Flights flown
- 299
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 314 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.