Flight Reliability
NK 1255 · Spirit Airlines
Las Vegas → Houston (LAS–IAH)91% of its flights flew this route. The rest (DTW–SDF) are included in these numbers.
36
Bring Snacks
WanderNerd Reliability Score
- 71%
- Arrive within 15 minutes
- 38 min
- Average arrival delay
- 7.5%
- Cancelled
- 4 min early
- Median arrival delay
Based on 106 historical flights. Data through May 2026.
What the data says
Tuesdays have been rough.
NK 1255 arrived on time 86% of the time on Thursdays and just 62% on Tuesdays. That gap is worth planning around.
Lagging the LAS–IAH route.
NK 1255 arrived on time 71% of the time, versus 84% across the LAS–IAH route.
Keep a backup plan handy.
NK 1255 was cancelled 7.5% of the time. Typical for U.S. flights is around 1–2%.
The breakdown
- Mon67%(18 flights)
- Tue62%(13 flights)
- Wed75%(12 flights)
- Thu86%(14 flights)
- Fri72%(18 flights)
- Sat71%(14 flights)
- Sun—(9 flights)
- 12–3 AM72%(88 flights)
- 12–3 PM70%(10 flights)
58%
Apr
Jan 91% → Apr 58% on time
| Month | On-time percentage | Flights |
|---|---|---|
| January 2026 | 91% | 23 |
| February 2026 | 81% | 26 |
| March 2026 | 52% | 27 |
| April 2026 | 58% | 12 |
- Departures on time
- 71%
- Diverted
- 0%
- Flights flown
- 98
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 106 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.