Flight Reliability
F9 4157 · Frontier Airlines
Las Vegas → San Francisco (LAS–SFO)
76
Usually Fine
WanderNerd Reliability Score
- 68%
- Arrive within 15 minutes
- 6 min
- Average arrival delay
- 0%
- Cancelled
- 9 min early
- Median arrival delay
Based on 38 historical flights. Data through May 2026.
What the data says
The 12–3 PM departure wins.
F9 4157 departing between 12–3 PM arrived on time 93% of the time, versus 60% between 3–6 PM.
Sunday scaries are real for this one.
F9 4157 arrived on time 92% of the time on Thursdays and just 63% on Sundays. That gap is worth planning around.
A bit behind the Frontier Airlines network.
F9 4157 arrived on time 68% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon—(4 flights)
- Tue—(2 flights)
- Wed—(3 flights)
- Thu92%(12 flights)
- Fri—(1 flights)
- Sat—(0 flights)
- Sun63%(16 flights)
- 6–9 AM—(1 flights)
- 12–3 PM93%(15 flights)
- 3–6 PM60%(15 flights)
- 6–9 PM—(7 flights)
- Departures on time
- 74%
- Diverted
- 0%
- Flights flown
- 38
- Months covered
- 11
Same route, other flights
Keep nerding
Based on 38 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.