Flight Reliability
F9 3707 · Frontier Airlines
San Antonio → Denver (SAT–DEN)
88
Pretty Reliable
WanderNerd Reliability Score
- 80%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 0%
- Cancelled
- 12 min early
- Median arrival delay
Based on 56 historical flights. Data through May 2026.
What the data says
The 12–3 PM departure wins.
F9 3707 departing between 12–3 PM arrived on time 83% of the time, versus 70% between 3–6 PM.
Better than the Frontier Airlines network average.
F9 3707 arrived on time 80% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon—(5 flights)
- Tue—(8 flights)
- Wed—(8 flights)
- Thu92%(13 flights)
- Fri—(7 flights)
- Sat—(6 flights)
- Sun—(9 flights)
- 9 AM–12 PM—(7 flights)
- 12–3 PM83%(24 flights)
- 3–6 PM70%(10 flights)
- 6–9 PM73%(15 flights)
73%
May
Dec 75% → May 73% on time
| Month | On-time percentage | Flights |
|---|---|---|
| December 2025 | 75% | 16 |
| January 2026 | 87% | 15 |
| May 2026 | 73% | 11 |
- Departures on time
- 77%
- Diverted
- 0%
- Flights flown
- 56
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 56 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.