Flight Reliability
NK 584 · Spirit Airlines
Fort Myers → Detroit (RSW–DTW)
31
Bring Snacks
WanderNerd Reliability Score
- 63%
- Arrive within 15 minutes
- 15 min
- Average arrival delay
- 9.3%
- Cancelled
- 5 min early
- Median arrival delay
Based on 97 historical flights. Data through May 2026.
What the data says
The 12–3 PM departure wins.
NK 584 departing between 12–3 PM arrived on time 72% of the time, versus 45% between 3–6 PM.
Friday is doing you no favors.
NK 584 arrived on time 73% of the time on Sundays and just 46% on Fridays. That gap is worth planning around.
Lagging the RSW–DTW route.
NK 584 arrived on time 63% of the time, versus 76% across the RSW–DTW route.
Lagging the Spirit Airlines network.
NK 584 arrived on time 63% of the time, versus 74% across the Spirit Airlines network.
The breakdown
- Mon50%(10 flights)
- Tue71%(14 flights)
- Wed62%(13 flights)
- Thu69%(13 flights)
- Fri46%(13 flights)
- Sat64%(14 flights)
- Sun73%(11 flights)
- 12–3 PM72%(57 flights)
- 3–6 PM45%(31 flights)
43%
Apr
Jan 73% → Apr 43% on time
| Month | On-time percentage | Flights |
|---|---|---|
| January 2026 | 73% | 22 |
| February 2026 | 65% | 26 |
| March 2026 | 62% | 26 |
| April 2026 | 43% | 14 |
- Departures on time
- 67%
- Diverted
- 0%
- Flights flown
- 88
- 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.