Flight Reliability
NK 139 · Spirit Airlines
Baltimore → Houston (BWI–IAH)
36
Bring Snacks
WanderNerd Reliability Score
- 61%
- Arrive within 15 minutes
- 28 min
- Average arrival delay
- 6.1%
- Cancelled
- 8 min
- Median arrival delay
Based on 33 historical flights. Data through May 2026.
What the data says
Well behind the BWI–IAH route.
NK 139 arrived on time 61% of the time, versus 80% across the BWI–IAH route.
Lagging the Spirit Airlines network.
NK 139 arrived on time 61% of the time, versus 74% across the Spirit Airlines network.
The breakdown
- Mon—(5 flights)
- Tue—(5 flights)
- Wed—(3 flights)
- Thu—(5 flights)
- Fri—(4 flights)
- Sat—(4 flights)
- Sun—(5 flights)
- Departures on time
- 42%
- Diverted
- 0%
- Flights flown
- 31
- Months covered
- 2
Same route, other flights
Keep nerding
Based on 33 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.