Flight Reliability
NK 831 · Spirit Airlines
Newark → Fort Lauderdale (EWR–FLL)
9
Bring Snacks
WanderNerd Reliability Score
- 65%
- Arrive within 15 minutes
- 23 min
- Average arrival delay
- 13.4%
- Cancelled
- 1 min
- Median arrival delay
Based on 97 historical flights. Data through May 2026.
What the data says
Mondays have been rough.
NK 831 arrived on time 86% of the time on Fridays and just 40% on Mondays. That gap is worth planning around.
Lagging the EWR–FLL route.
NK 831 arrived on time 65% of the time, versus 76% across the EWR–FLL route.
Lagging the Spirit Airlines network.
NK 831 arrived on time 65% of the time, versus 74% across the Spirit Airlines network.
The breakdown
- Mon40%(10 flights)
- Tue54%(13 flights)
- Wed83%(12 flights)
- Thu58%(12 flights)
- Fri86%(14 flights)
- Sat71%(14 flights)
- Sun—(8 flights)
75%
Apr
Jan 68% → Apr 75% on time
| Month | On-time percentage | Flights |
|---|---|---|
| January 2026 | 68% | 22 |
| February 2026 | 70% | 23 |
| March 2026 | 54% | 26 |
| April 2026 | 75% | 12 |
- Departures on time
- 77%
- Diverted
- 1.0%
- Flights flown
- 83
- Months covered
- 4
Same route, other flights
Keep nerding
Based on 97 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.