Flight Reliability
NK 1254 · Spirit Airlines
Houston → Las Vegas (IAH–LAS)90% of its flights flew this route. The rest (MKE–DTW) are included in these numbers.
- 80%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 5.8%
- Cancelled
- 13 min early
- Median arrival delay
Based on 104 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
NK 1254 arrived on time 100% of the time on Tuesdays and just 50% on Sundays. That gap is worth planning around.
A bit behind the IAH–LAS route.
NK 1254 arrived on time 80% of the time, versus 83% across the IAH–LAS route.
A bit ahead of the Spirit Airlines network.
NK 1254 arrived on time 80% of the time, versus 74% across the Spirit Airlines network.
Keep a backup plan handy.
NK 1254 was cancelled 5.8% of the time. Typical for U.S. flights is around 1–2%.
The breakdown
- Mon83%(18 flights)
- Tue100%(12 flights)
- Wed92%(12 flights)
- Thu77%(13 flights)
- Fri94%(18 flights)
- Sat55%(11 flights)
- Sun50%(14 flights)
- 9 AM–12 PM—(9 flights)
- 9 PM–12 AM78%(89 flights)
Jan 87% → Apr 64% on time
| Month | On-time percentage | Flights |
|---|---|---|
| January 2026 | 87% | 23 |
| February 2026 | 85% | 27 |
| March 2026 | 68% | 28 |
| April 2026 | 64% | 11 |
- Departures on time
- 66%
- Diverted
- 0%
- Flights flown
- 98
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 104 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.