Flight Reliability
F9 3938 · Frontier Airlines
Hartford → San Juan (BDL–SJU)
24
Bring Snacks
WanderNerd Reliability Score
- 61%
- Arrive within 15 minutes
- 75 min
- Average arrival delay
- 0%
- Cancelled
- 6 min
- Median arrival delay
Based on 34 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
F9 3938 departing between 9 PM–12 AM arrived on time 70% of the time, versus 57% between 6–9 PM.
A bit behind the BDL–SJU route.
F9 3938 arrived on time 61% of the time, versus 65% across the BDL–SJU route.
Lagging the Frontier Airlines network.
F9 3938 arrived on time 61% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon—(6 flights)
- Tue—(1 flights)
- Wed—(0 flights)
- Thu—(8 flights)
- Fri—(6 flights)
- Sat—(6 flights)
- Sun—(6 flights)
- 6–9 PM57%(23 flights)
- 9 PM–12 AM70%(10 flights)
- Departures on time
- 56%
- Diverted
- 2.9%
- Flights flown
- 33
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 34 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.