Flight Reliability
NK 436 · Spirit Airlines
Houston → Miami (IAH–MIA)
70
Usually Fine
WanderNerd Reliability Score
- 77%
- Arrive within 15 minutes
- 17 min
- Average arrival delay
- 2.9%
- Cancelled
- 9 min early
- Median arrival delay
Based on 35 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
NK 436 departing between 3–6 AM arrived on time 86% of the time, versus 70% between 3–6 PM.
The breakdown
- Mon—(5 flights)
- Tue—(5 flights)
- Wed—(5 flights)
- Thu—(5 flights)
- Fri—(5 flights)
- Sat—(5 flights)
- Sun—(4 flights)
- 3–6 AM86%(14 flights)
- 3–6 PM70%(20 flights)
- Departures on time
- 71%
- Diverted
- 0%
- 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.