Flight Reliability
WN 4935 · Southwest Airlines
Dallas → Salt Lake City (DAL–SLC)94% of its flights flew this route. The rest (BZN–LAS, LAS–SAN) are included in these numbers.
86
Pretty Reliable
WanderNerd Reliability Score
- 90%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 3.1%
- Cancelled
- 4 min early
- Median arrival delay
Based on 32 historical flights. Data through May 2026.
What the data says
Well ahead of the DAL–SLC route.
WN 4935 arrived on time 90% of the time, versus 75% across the DAL–SLC route.
Better than the Southwest Airlines network average.
WN 4935 arrived on time 90% of the time, versus 78% across the Southwest Airlines network.
The breakdown
- Mon—(5 flights)
- Tue—(1 flights)
- Wed—(0 flights)
- Thu—(5 flights)
- Fri—(5 flights)
- Sat—(7 flights)
- Sun—(8 flights)
- 6–9 AM—(3 flights)
- 9 AM–12 PM100%(18 flights)
- 12–3 PM—(8 flights)
- 6–9 PM—(1 flights)
- 9 PM–12 AM—(1 flights)
- Departures on time
- 77%
- Diverted
- 0%
- Flights flown
- 31
- Months covered
- 4
Same route, other flights
Keep nerding
Based on 32 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.