Flight Reliability
NK 689 · Spirit Airlines
Newark → Houston (EWR–IAH)98% of its flights flew this route. The rest (EWR–MCO) are included in these numbers.
83
Pretty Reliable
WanderNerd Reliability Score
- 75%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 0%
- Cancelled
- 15 min early
- Median arrival delay
Based on 51 historical flights. Data through May 2026.
What the data says
A bit behind the EWR–IAH route.
NK 689 arrived on time 75% of the time, versus 79% across the EWR–IAH route.
The breakdown
- Mon—(8 flights)
- Tue—(8 flights)
- Wed—(0 flights)
- Thu—(9 flights)
- Fri—(9 flights)
- Sat—(9 flights)
- Sun—(8 flights)
- 12–3 PM72%(43 flights)
- 3–6 PM—(8 flights)
- Departures on time
- 73%
- Diverted
- 0%
- Flights flown
- 51
- Months covered
- 3
Same route, other flights
Keep nerding
Based on 51 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.