Flight Reliability
WN 5151 · Southwest Airlines
Denver → Bozeman (DEN–BZN)87% of its flights flew this route. The rest (PHX–SEA) are included in these numbers.
29
Bring Snacks
WanderNerd Reliability Score
- 57%
- Arrive within 15 minutes
- 29 min
- Average arrival delay
- 6.7%
- Cancelled
- 10 min
- Median arrival delay
Based on 30 historical flights. Data through May 2026.
What the data says
Well behind the DEN–BZN route.
WN 5151 arrived on time 57% of the time, versus 79% across the DEN–BZN route.
Well behind the Southwest Airlines network.
WN 5151 arrived on time 57% of the time, versus 78% across the Southwest Airlines network.
The breakdown
- Mon—(9 flights)
- Tue—(0 flights)
- Wed—(0 flights)
- Thu—(8 flights)
- Fri—(7 flights)
- Sat—(0 flights)
- Sun—(4 flights)
- Departures on time
- 54%
- Diverted
- 0%
- Flights flown
- 28
- Months covered
- 4
Same route, other flights
Keep nerding
Based on 30 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.