Flight Reliability
NK 353 · Spirit Airlines
Fort Lauderdale → Christiansted (FLL–STX)
68
Usually Fine
WanderNerd Reliability Score
- 71%
- Arrive within 15 minutes
- 14 min
- Average arrival delay
- 1.7%
- Cancelled
- 1 min early
- Median arrival delay
Based on 181 historical flights. Data through May 2026.
What the data says
The 6–9 AM departure wins.
NK 353 departing between 6–9 AM arrived on time 90% of the time, versus 61% between 9 AM–12 PM.
Saturdays have been rough.
NK 353 arrived on time 100% of the time on Tuesdays and just 52% on Saturdays. That gap is worth planning around.
Recent months have been rougher.
NK 353 arrived on time 22% of the time over the last three months in the data, compared with 70% in the three months before that.
The breakdown
- Mon63%(46 flights)
- Tue100%(12 flights)
- Wed89%(18 flights)
- Thu100%(14 flights)
- Fri64%(44 flights)
- Sat52%(29 flights)
- Sun86%(14 flights)
- 6–9 AM90%(31 flights)
- 9 AM–12 PM61%(38 flights)
- 12–3 PM69%(108 flights)
18%
Mar
Jun 100% → Mar 18% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 100% | 23 |
| July 2025 | 90% | 30 |
| August 2025 | 90% | 31 |
| September 2025 | 91% | 11 |
| October 2025 | 54% | 13 |
| November 2025 | 67% | 15 |
| January 2026 | 15% | 13 |
| February 2026 | 33% | 12 |
| March 2026 | 18% | 11 |
- Departures on time
- 72%
- Diverted
- 0.6%
- Flights flown
- 177
- Months covered
- 11
Keep nerding
Based on 181 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.