Flight Reliability
F9 4427 · Frontier Airlines
Baltimore → Atlanta (BWI–ATL)
87
Pretty Reliable
WanderNerd Reliability Score
- 79%
- Arrive within 15 minutes
- 2 min
- Average arrival delay
- 0%
- Cancelled
- 11 min early
- Median arrival delay
Based on 43 historical flights. Data through May 2026.
What the data says
A bit ahead of the Frontier Airlines network.
F9 4427 arrived on time 79% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon—(9 flights)
- Tue—(5 flights)
- Wed—(4 flights)
- Thu—(6 flights)
- Fri—(8 flights)
- Sat—(4 flights)
- Sun—(7 flights)
- 6–9 AM86%(36 flights)
- 9 AM–12 PM—(4 flights)
- 6–9 PM—(3 flights)
- Departures on time
- 88%
- Diverted
- 0%
- Flights flown
- 43
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 43 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.