Flight Reliability
F9 3306 · Frontier Airlines
Jacksonville → San Juan (JAX–SJU)
82
Pretty Reliable
WanderNerd Reliability Score
- 87%
- Arrive within 15 minutes
- 12 min
- Average arrival delay
- 3.1%
- Cancelled
- 7 min early
- Median arrival delay
Based on 98 historical flights. Data through May 2026.
What the data says
Mondays have been rough.
F9 3306 arrived on time 95% of the time on Fridays and just 75% on Mondays. That gap is worth planning around.
Better than the JAX–SJU route average.
F9 3306 arrived on time 87% of the time, versus 80% across the JAX–SJU route.
Better than the Frontier Airlines network average.
F9 3306 arrived on time 87% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon75%(16 flights)
- Tue—(4 flights)
- Wed—(2 flights)
- Thu91%(21 flights)
- Fri95%(20 flights)
- Sat83%(12 flights)
- Sun90%(20 flights)
- 9 AM–12 PM93%(73 flights)
- 12–3 PM—(4 flights)
- 3–6 PM—(2 flights)
- 6–9 PM—(8 flights)
- 9 PM–12 AM—(8 flights)
100%
May
Jun 91% → May 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 91% | 21 |
| July 2025 | 95% | 20 |
| August 2025 | 75% | 12 |
| May 2026 | 100% | 23 |
- Departures on time
- 86%
- Diverted
- 0%
- Flights flown
- 95
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 98 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.