Flight Reliability
F9 4915 · Frontier Airlines
San Juan → Fort Lauderdale (SJU–FLL)
95
Nerd Approved
WanderNerd Reliability Score
- 87%
- Arrive within 15 minutes
- 6 min early
- Average arrival delay
- 0%
- Cancelled
- 10 min early
- Median arrival delay
Based on 38 historical flights. Data through May 2026.
What the data says
The 6–9 AM departure wins.
F9 4915 departing between 6–9 AM arrived on time 93% of the time, versus 70% between 9 AM–12 PM.
Better than the SJU–FLL route average.
F9 4915 arrived on time 87% of the time, versus 76% across the SJU–FLL route.
Better than the Frontier Airlines network average.
F9 4915 arrived on time 87% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon—(7 flights)
- Tue—(1 flights)
- Wed—(1 flights)
- Thu—(9 flights)
- Fri—(8 flights)
- Sat—(3 flights)
- Sun—(9 flights)
- 6–9 AM93%(28 flights)
- 9 AM–12 PM70%(10 flights)
- Departures on time
- 84%
- Diverted
- 0%
- Flights flown
- 38
- Months covered
- 3
Same route, other flights
Keep nerding
Based on 38 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.