Flight Reliability
F9 3852 · Frontier Airlines
Atlanta → Buffalo (ATL–BUF)
48
Bring Snacks
WanderNerd Reliability Score
- 63%
- Arrive within 15 minutes
- 21 min
- Average arrival delay
- 4.4%
- Cancelled
- 7 min
- Median arrival delay
Based on 90 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
F9 3852 departing between 9 AM–12 PM arrived on time 66% of the time, versus 55% between 12–3 PM.
Sunday scaries are real for this one.
F9 3852 arrived on time 84% of the time on Thursdays and just 40% on Sundays. That gap is worth planning around.
Well behind the ATL–BUF route.
F9 3852 arrived on time 63% of the time, versus 79% across the ATL–BUF route.
Lagging the Frontier Airlines network.
F9 3852 arrived on time 63% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon70%(10 flights)
- Tue64%(11 flights)
- Wed—(0 flights)
- Thu84%(19 flights)
- Fri60%(10 flights)
- Sat63%(16 flights)
- Sun40%(20 flights)
- 6–9 AM—(3 flights)
- 9 AM–12 PM66%(70 flights)
- 12–3 PM55%(11 flights)
- 3–6 PM—(2 flights)
53%
Feb
Jun 63% → Feb 53% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 63% | 16 |
| July 2025 | 65% | 17 |
| August 2025 | 67% | 18 |
| January 2026 | 67% | 12 |
| February 2026 | 53% | 19 |
- Departures on time
- 62%
- Diverted
- 0%
- Flights flown
- 86
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 90 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.