Flight Reliability
F9 4699 · Frontier Airlines
Atlanta → Milwaukee (ATL–MKE)
53
A Little Dicey
WanderNerd Reliability Score
- 56%
- Arrive within 15 minutes
- 17 min
- Average arrival delay
- 0%
- Cancelled
- 5 min
- Median arrival delay
Based on 53 historical flights. Data through May 2026.
What the data says
The 6–9 AM departure wins.
F9 4699 departing between 6–9 AM arrived on time 67% of the time, versus 33% between 9 AM–12 PM.
Monday is the weak spot.
F9 4699 arrived on time 63% of the time on Fridays. On Mondays: 55%.
Well behind the ATL–MKE route.
F9 4699 arrived on time 56% of the time, versus 84% across the ATL–MKE route.
Well behind the Frontier Airlines network.
F9 4699 arrived on time 56% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon55%(22 flights)
- Tue—(0 flights)
- Wed—(4 flights)
- Thu—(0 flights)
- Fri63%(24 flights)
- Sat—(2 flights)
- Sun—(0 flights)
- 6–9 AM67%(21 flights)
- 9 AM–12 PM33%(15 flights)
- 12–3 PM—(5 flights)
- 3–6 PM64%(11 flights)
- Departures on time
- 60%
- Diverted
- 1.9%
- Flights flown
- 52
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 53 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.