Flight Reliability
NK 1257 · Spirit Airlines
Newark → Houston (EWR–IAH)89% of its flights flew this route. The rest (DTW–MCI) are included in these numbers.
34
Bring Snacks
WanderNerd Reliability Score
- 74%
- Arrive within 15 minutes
- 13 min
- Average arrival delay
- 11.8%
- Cancelled
- 8 min early
- Median arrival delay
Based on 93 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
NK 1257 departing between 6–9 AM arrived on time 82% of the time, versus 73% between 12–3 PM.
Thursdays have been rough.
NK 1257 arrived on time 92% of the time on Mondays and just 67% on Thursdays. That gap is worth planning around.
A bit behind the EWR–IAH route.
NK 1257 arrived on time 74% of the time, versus 79% across the EWR–IAH route.
The breakdown
- Mon92%(12 flights)
- Tue—(7 flights)
- Wed—(7 flights)
- Thu67%(18 flights)
- Fri79%(14 flights)
- Sat—(9 flights)
- Sun73%(15 flights)
- 6–9 AM82%(11 flights)
- 12–3 PM73%(71 flights)
73%
Apr
Jan 83% → Apr 73% on time
| Month | On-time percentage | Flights |
|---|---|---|
| January 2026 | 83% | 12 |
| February 2026 | 67% | 21 |
| March 2026 | 71% | 28 |
| April 2026 | 73% | 11 |
- Departures on time
- 66%
- Diverted
- 0%
- Flights flown
- 82
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 93 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.