Flight Reliability
NK 1258 · Spirit Airlines
Houston → Los Angeles (IAH–LAX)91% of its flights flew this route. The rest (MCI–DTW) are included in these numbers.
- 79%
- Arrive within 15 minutes
- 0 min
- Average arrival delay
- 0.9%
- Cancelled
- 10 min early
- Median arrival delay
Based on 107 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
NK 1258 departing between 9 AM–12 PM arrived on time 100% of the time, versus 77% between 3–6 PM.
Saturdays have been rough.
NK 1258 arrived on time 92% of the time on Wednesdays and just 64% on Saturdays. That gap is worth planning around.
A bit behind the IAH–LAX route.
NK 1258 arrived on time 79% of the time, versus 84% across the IAH–LAX route.
A bit ahead of the Spirit Airlines network.
NK 1258 arrived on time 79% of the time, versus 74% across the Spirit Airlines network.
The breakdown
- Mon86%(14 flights)
- Tue86%(14 flights)
- Wed92%(13 flights)
- Thu79%(19 flights)
- Fri69%(13 flights)
- Sat64%(14 flights)
- Sun79%(19 flights)
- 9 AM–12 PM100%(10 flights)
- 3–6 PM77%(96 flights)
Jan 79% → Apr 77% on time
| Month | On-time percentage | Flights |
|---|---|---|
| January 2026 | 79% | 24 |
| February 2026 | 64% | 28 |
| March 2026 | 87% | 31 |
| April 2026 | 77% | 13 |
- Departures on time
- 71%
- Diverted
- 0%
- Flights flown
- 106
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 107 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.