Flight Reliability
WN 4800 · Southwest Airlines
Las Vegas → San Francisco (LAS–SFO)98% of its flights flew this route. The rest (DAL–BWI) are included in these numbers.
91
Nerd Approved
WanderNerd Reliability Score
- 83%
- Arrive within 15 minutes
- 6 min
- Average arrival delay
- 0%
- Cancelled
- 9 min early
- Median arrival delay
Based on 48 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
WN 4800 departing between 9 AM–12 PM arrived on time 93% of the time, versus 57% between 9 PM–12 AM.
Well ahead of the LAS–SFO route.
WN 4800 arrived on time 83% of the time, versus 67% across the LAS–SFO route.
A bit ahead of the Southwest Airlines network.
WN 4800 arrived on time 83% of the time, versus 78% across the Southwest Airlines network.
The breakdown
- Mon—(8 flights)
- Tue—(9 flights)
- Wed—(9 flights)
- Thu—(6 flights)
- Fri—(5 flights)
- Sat—(5 flights)
- Sun—(6 flights)
- 9 AM–12 PM93%(28 flights)
- 12–3 PM—(1 flights)
- 3–6 PM—(5 flights)
- 9 PM–12 AM57%(14 flights)
- Departures on time
- 77%
- Diverted
- 0%
- Flights flown
- 48
- Months covered
- 4
Same route, other flights
Keep nerding
Based on 48 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.