Flight Reliability
NK 449 · Spirit Airlines
Fort Lauderdale → Boston (FLL–BOS)
85
Pretty Reliable
WanderNerd Reliability Score
- 77%
- Arrive within 15 minutes
- 8 min
- Average arrival delay
- 0%
- Cancelled
- 6 min early
- Median arrival delay
Based on 57 historical flights. Data through May 2026.
What the data says
Better than the FLL–BOS route average.
NK 449 arrived on time 77% of the time, versus 67% across the FLL–BOS route.
A bit ahead of the Spirit Airlines network.
NK 449 arrived on time 77% of the time, versus 74% across the Spirit Airlines network.
The breakdown
- Mon—(8 flights)
- Tue—(8 flights)
- Wed—(8 flights)
- Thu—(9 flights)
- Fri—(8 flights)
- Sat—(8 flights)
- Sun—(8 flights)
- Departures on time
- 72%
- Diverted
- 0%
- Flights flown
- 57
- Months covered
- 2
Same route, other flights
Keep nerding
Based on 57 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.