Flight Reliability
NK 988 · Spirit Airlines
Atlanta → Detroit (ATL–DTW)98% of its flights flew this route. The rest (IAH–DTW) are included in these numbers.
- 67%
- Arrive within 15 minutes
- 19 min
- Average arrival delay
- 13.6%
- Cancelled
- 1 min
- Median arrival delay
Based on 59 historical flights. Data through May 2026.
What the data says
The 6–9 AM departure wins.
NK 988 departing between 6–9 AM arrived on time 81% of the time, versus 57% between 9 AM–12 PM.
Saturdays have been rough.
NK 988 arrived on time 80% of the time on Thursdays and just 50% on Saturdays. That gap is worth planning around.
Lagging the ATL–DTW route.
NK 988 arrived on time 67% of the time, versus 78% across the ATL–DTW route.
Lagging the Spirit Airlines network.
NK 988 arrived on time 67% of the time, versus 74% across the Spirit Airlines network.
The breakdown
- Mon—(6 flights)
- Tue—(5 flights)
- Wed—(4 flights)
- Thu80%(10 flights)
- Fri—(9 flights)
- Sat50%(10 flights)
- Sun—(7 flights)
- 6–9 AM81%(21 flights)
- 9 AM–12 PM57%(30 flights)
Jan 87% → Apr 62% on time
| Month | On-time percentage | Flights |
|---|---|---|
| January 2026 | 87% | 15 |
| March 2026 | 53% | 17 |
| April 2026 | 62% | 13 |
- Departures on time
- 69%
- Diverted
- 0%
- Flights flown
- 51
- Months covered
- 4
Same route, other flights
Keep nerding
Based on 59 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.