Flight Reliability
NK 430 · Spirit Airlines
Miami → Houston (MIA–IAH)
63
A Little Dicey
WanderNerd Reliability Score
- 68%
- Arrive within 15 minutes
- 12 min
- Average arrival delay
- 0%
- Cancelled
- 13 min early
- Median arrival delay
Based on 35 historical flights. Data through May 2026.
What the data says
The 3–6 AM departure wins.
NK 430 departing between 3–6 AM arrived on time 73% of the time, versus 62% between 6–9 AM.
Lagging the MIA–IAH route.
NK 430 arrived on time 68% of the time, versus 77% across the MIA–IAH route.
A bit behind the Spirit Airlines network.
NK 430 arrived on time 68% of the time, versus 74% across the Spirit Airlines network.
The breakdown
- Mon—(5 flights)
- Tue—(5 flights)
- Wed—(5 flights)
- Thu—(5 flights)
- Fri—(4 flights)
- Sat—(5 flights)
- Sun—(5 flights)
- 3–6 AM73%(11 flights)
- 6–9 AM62%(21 flights)
- 12–3 PM—(2 flights)
- Departures on time
- 71%
- Diverted
- 2.9%
- Flights flown
- 34
- Months covered
- 2
Same route, other flights
Keep nerding
Based on 35 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.