Flight Reliability
NK 583 · Spirit Airlines
Detroit → Fort Myers (DTW–RSW)
35
Bring Snacks
WanderNerd Reliability Score
- 67%
- Arrive within 15 minutes
- 15 min
- Average arrival delay
- 9.3%
- Cancelled
- 2 min early
- Median arrival delay
Based on 97 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
NK 583 departing between 9 AM–12 PM arrived on time 72% of the time, versus 58% between 12–3 PM.
Friday is doing you no favors.
NK 583 arrived on time 80% of the time on Sundays and just 39% on Fridays. That gap is worth planning around.
Lagging the DTW–RSW route.
NK 583 arrived on time 67% of the time, versus 76% across the DTW–RSW route.
Lagging the Spirit Airlines network.
NK 583 arrived on time 67% of the time, versus 74% across the Spirit Airlines network.
The breakdown
- Mon60%(10 flights)
- Tue71%(14 flights)
- Wed69%(13 flights)
- Thu79%(14 flights)
- Fri39%(13 flights)
- Sat71%(14 flights)
- Sun80%(10 flights)
- 9 AM–12 PM72%(57 flights)
- 12–3 PM58%(31 flights)
57%
Apr
Jan 73% → Apr 57% on time
| Month | On-time percentage | Flights |
|---|---|---|
| January 2026 | 73% | 22 |
| February 2026 | 69% | 26 |
| March 2026 | 65% | 26 |
| April 2026 | 57% | 14 |
- Departures on time
- 71%
- 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.