Flight Reliability
F9 3420 · Frontier Airlines
Las Vegas → San Antonio (LAS–SAT)
82
Pretty Reliable
WanderNerd Reliability Score
- 74%
- Arrive within 15 minutes
- 11 min
- Average arrival delay
- 0%
- Cancelled
- 5 min early
- Median arrival delay
Based on 35 historical flights. Data through May 2026.
What the data says
A bit behind the LAS–SAT route.
F9 3420 arrived on time 74% of the time, versus 77% across the LAS–SAT route.
The breakdown
- Mon—(6 flights)
- Tue—(0 flights)
- Wed—(0 flights)
- Thu82%(11 flights)
- Fri—(6 flights)
- Sat—(0 flights)
- Sun83%(12 flights)
- Departures on time
- 74%
- Diverted
- 0%
- Flights flown
- 35
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 35 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.